User:Garo3/sandbox

This is a currently incomplete list of ten thousand subjects for which Wikipedia should ultimately have high-quality articles. It expands on Vital articles, which lists one thousand articles. This list is in the process of being refined and prioritized on the basis of topic-by-topic discussion and voting. Changes can be proposed on the talk page. Everyone is welcome to participate.

Because of its size, Vital Articles/Expanded has been split into eleven sublists. If you spot a duplicate listing, please remove one of them; if you aren't sure in which section a topic belongs, please initiate a discussion on the talk page.

As of August 19, 2017, this list includes 9,911 individual articles, based on the manually entered totals for each of the sublists:

=History (683 articles)=

Basics (4 articles)

 * 1)   History of the world (Level 1)
 * 2)  History (Level 2)
 * 3)  Civilization (Level 2)
 * 4)   History of Earth (Level 3)

History by continent and region (15 articles)

 * 1)  History of Europe (Level 3)
 * 2)  History of Scandinavia
 * 3)  History of North America (Level 3)
 * 4)  History of the Caribbean
 * 5)  History of South America (Level 3)
 * 6)  History of Africa (Level 3)
 * 7)  History of North Africa
 * 8)  History of Oceania (Level 3)
 * 9)  History of Asia (Level 3)
 * 10)  History of the Middle East (Level 3)
 * 11)  History of East Asia (Level 3)
 * 12)  History of India (Level 3)
 * 13)  History of Southeast Asia
 * 14)   History of Central Asia
 * 15)  History of Antarctica

Europe (16 articles)

 * 1)  History of the United Kingdom
 * 2)  History of England
 * 3)  History of Scotland
 * 4)  History of Ireland
 * 5)  History of France
 * 6)   History of the Netherlands
 * 7)   History of Germany
 * 8)  History of Austria
 * 9)  History of Italy
 * 10)  History of Greece
 * 11)  History of Spain
 * 12)  History of Portugal
 * 13)   History of Russia
 * 14)  History of Ukraine
 * 15)  History of Poland
 * 16)  History of Romania

Americas (4 articles)

 * 1)  History of the United States
 * 2)  History of Canada
 * 3)  History of Mexico
 * 4)  History of Brazil

Africa (6 articles)

 * 1)  History of Egypt
 * 2)   History of South Africa
 * 3)  History of Morocco
 * 4)  History of Ethiopia
 * 5)  History of Nigeria
 * 6)  History of Sudan

Oceania (1 article)

 * 1)  History of Australia

Asia (15 articles)

 * 1)  History of China
 * 2)  History of the People's Republic of China
 * 3)  History of the Republic of India
 * 4)  History of Japan
 * 5)  History of Korea
 * 6)  History of Thailand
 * 7)  History of Vietnam
 * 8)   History of the Philippines
 * 9)  History of Indonesia
 * 10)  History of Turkey
 * 11)  History of Iran
 * 12)  History of Iraq
 * 13)  History of Pakistan
 * 14)  History of Afghanistan
 * 15)  History of Israel

General (10 articles)

 * 1)  Prehistory (Level 2)
 * 2)  Human evolution
 * 3)  Australopithecus
 * 4)  Homo habilis
 * 5)  Homo erectus
 * 6)  Cro-Magnon
 * 7)  Denisovan
 * 8)  Neanderthal
 * 9)  Paranthropus
 * 10)  Early human migrations (Level 3)

Stone Age (11 articles)

 * 1)   Stone Age (Level 3)
 * 2)  Paleolithic
 * 3)  Lower Paleolithic
 * 4)  Middle Paleolithic
 * 5)  Control of fire by early humans
 * 6)  Upper Paleolithic
 * 7)  Behavioral modernity
 * 8)  Mesolithic
 * 9)  Neolithic
 * 10)  Neolithic Revolution (Level 3)
 * 11)  Cradle of civilization

General (8 articles)

 * 1)  Ancient history (Level 2)
 * 2)  Bronze Age (Level 3)
 * 3)  Chalcolithic
 * 4)  Iron Age (Level 3)
 * 5)  Classical antiquity
 * 6)  Hellenistic period
 * 7)  Late antiquity
 * 8)  Silk Road (Level 3)

Europe (31 articles)

 * 1)  Ancient Greece (Level 3)
 * 2)  Mycenaean Greece
 * 3)  Greco-Persian Wars
 * 4)  Delian League
 * 5)  Sparta
 * 6)  Ancient Rome (Level 3)
 * 7)  Roman Kingdom
 * 8)  Roman Republic
 * 9)  Roman Empire
 * 10)  Crisis of the Third Century
 * 11)  Julio-Claudian dynasty
 * 12)  Nerva–Antonine dynasty
 * 13)  Western Roman Empire
 * 14)  Fall of the Western Roman Empire
 * 15)  Gallic Wars
 * 16)  Macedonian Wars
 * 17)  Crisis of the Roman Republic
 * 18)  Minoan civilization
 * 19)  Dacians
 * 20)  Etruscan civilization
 * 21)  Macedonia
 * 22)  Celts
 * 23)  Saxons
 * 24)  Sarmatians
 * 25)  Scythians
 * 26)  Thrace
 * 27)  Migration Period
 * 28)  Alans
 * 29)  Huns
 * 30)  Goths
 * 31)   Vandals

Africa (16 articles)

 * 1)  Ancient Egypt (Level 3)
 * 2)  Naqada III
 * 3)  Old Kingdom of Egypt
 * 4)  Middle Kingdom of Egypt
 * 5)  New Kingdom of Egypt
 * 6)  Ptolemaic Kingdom
 * 7)  Pharaoh
 * 8)  Valley of the Kings
 * 9)  Kingdom of Aksum
 * 10)  Bantu expansion
 * 11)  Ancient Carthage
 * 12)  Punic Wars
 * 13)  Nok culture
 * 14)  Nubia
 * 15)  Kingdom of Kush
 * 16)  Land of Punt

Central Asia, Iran, Caucasus (12 articles)

 * 1)  Achaemenid Empire (Level 3)
 * 2)  Atropatene
 * 3)  Bactria
 * 4)  Caucasian Albania
 * 5)  Kingdom of Iberia
 * 6)  Elam
 * 7)  Medes
 * 8)  Parthian Empire
 * 9)  Roman–Persian Wars
 * 10)   Sasanian Empire
 * 11)  Sogdia
 * 12)  Tocharians

Eastern Asia (16 articles)

 * 1)  Han dynasty (Level 3)
 * 2)  Gojoseon
 * 3)  Jōmon period
 * 4)  Jin dynasty
 * 5)  Qin dynasty
 * 6)  Shang dynasty
 * 7)  Sixteen Kingdoms
 * 8)  Northern and Southern dynasties
 * 9)  Spring and Autumn period
 * 10)  Three Kingdoms
 * 11)  Three Kingdoms of Korea
 * 12)  Warring States period
 * 13)  Zhou dynasty
 * 14)  Xia dynasty
 * 15)  Xiongnu
 * 16)  Yayoi period

Southern Asia (10 articles)

 * 1)  Gupta Empire (Level 3)
 * 2)    Indus Valley Civilisation (Level 3)
 * 3)   Chola dynasty
 * 4)   Indo-Greek Kingdom
 * 5)  Indo-Scythians
 * 6)  Kushan Empire
 * 7)  Magadha
 * 8)  Maurya Empire
 * 9)  Satavahana dynasty
 * 10)  Vedic period

Southeastern Asia (3 articles)

 * 1)  Hồng Bàng dynasty
 * 2)  Nanyue
 * 3)  Pyu city-states

Western Asia (20 articles)

 * 1)  Fertile Crescent
 * 2)  Mesopotamia (Level 3)
 * 3)  Sumer (Level 3)
 * 4)  Assyria (Level 3)
 * 5)  Babylonia
 * 6)  Chaldea
 * 7)   Akkadian Empire
 * 8)  Amorites
 * 9)  Kingdom of Armenia
 * 10)  Ebla
 * 11)  History of ancient Israel and Judah
 * 12)  Hittites
 * 13)  Lydia
 * 14)  Mitanni
 * 15)  Phoenicia
 * 16)  Phrygia
 * 17)  Seleucid Empire
 * 18)  Sabaeans
 * 19)  Trojan War
 * 20)  Urartu

Americas (11 articles)

 * 1)  Ancestral Puebloans
 * 2)  Andean civilizations (Level 3)
 * 3)  Chavín culture
 * 4)  Norte Chico civilization
 * 5)  Mesoamerica (Level 3)
 * 6)  Maya civilization (Level 3)
 * 7)  Olmec
 * 8)  Zapotec civilization
 * 9)  Paleo-Indians
 * 10)  Clovis culture
 * 11)  Settlement of the Americas

General (9 articles)

 * 1)  Post-classical history (Level 2)
 * 2)  Feudalism
 * 3)  Serfdom
 * 4)  Guild
 * 5)  Nobility
 * 6)  Boyar
 * 7)  Knight
 * 8)  Chivalry
 * 9)  Samurai

General (6 articles)

 * 1)  Middle Ages (Level 3)
 * 2)   Black Death (Level 3)
 * 3)  East–West Schism
 * 4)  House of Habsburg
 * 5)  House of Medici
 * 6)  Normans

Western Europe (38 articles)
Italy (7 articles) France (7 articles) Spain (6 articles)
 * 1)  Anglo-Saxons
 * 2)   Franks
 * 3)  Hanseatic League
 * 4)  Holy Roman Empire (Level 3)
 * 5)  Inquisition
 * 6)  Investiture Controversy
 * 7)  Kingdom of England
 * 8)  Battle of Hastings
 * 9)  Norman conquest of England
 * 10)  Wars of the Roses
 * 11)  Kingdom of Germany
 * 12)  Knights Templar
 * 13)  Northern Crusades
 * 14)  Ostsiedlung
 * 15)  House of Plantagenet
 * 16)  Viking Age (Level 3)
 * 17)  Vikings
 * 18)  Wends
 * 1)  Gothic War
 * 2)  Guelphs and Ghibellines
 * 3)  Lombards
 * 4)  Papal States
 * 5)  Kingdom of Sicily
 * 6)  Republic of Genoa
 * 7)  Republic of Venice
 * 1)  Capetian dynasty
 * 2)  Carolingian Empire
 * 3)  Duchy of Burgundy
 * 4)  Kingdom of France
 * 5)  Hundred Years' War
 * 6)  Francia
 * 7)  Merovingian dynasty
 * 1)  Al-Andalus
 * 2)  Caliphate of Córdoba
 * 3)  Reconquista
 * 4)  Kingdom of Aragon
 * 5)  Kingdom of Castile
 * 6)  Visigothic Kingdom

Eastern Europe and Central (26 articles)

 * 1)  Pannonian Avars
 * 2)  Kingdom of Bohemia
 * 3)  First Bulgarian Empire
 * 4)  Second Bulgarian Empire
 * 5)  Byzantine Empire (Level 3)
 * 6)   Arab–Byzantine wars
 * 7)  Byzantine–Bulgarian wars
 * 8)  Byzantine–Ottoman wars
 * 9)  Fall of Constantinople
 * 10)  Cumans
 * 11)  Kingdom of Galicia–Volhynia
 * 12)  Grand Duchy of Lithuania
 * 13)  Grand Duchy of Moscow
 * 14)  Kingdom of Hungary
 * 15)  Hussite Wars
 * 16)  Khazars
 * 17)  Kievan Rus'
 * 18)   Great Moravia
 * 19)  Novgorod Republic
 * 20)  Cretan War
 * 21)  Pechenegs
 * 22)  Polish–Lithuanian–Teutonic War
 * 23)  Rurik dynasty
 * 24)  Teutonic Order
 * 25)  Vladimir-Suzdal
 * 26)  Volga Bulgaria

Africa (7 articles)

 * 1)  Ajuran Sultanate
 * 2)  Almoravid dynasty
 * 3)  Ghana Empire
 * 4)  Kanem Empire
 * 5)  Mali Empire
 * 6)  Songhai Empire
 * 7)   Trans-Saharan trade

Western Asia (9 articles)

 * 1)  Islamic Golden Age (Level 3)
 * 2)   Crusades (Level 3)
 * 3)  Crusader states
 * 4)   Ottoman Empire (Level 3)
 * 5)  Abbasid Caliphate
 * 6) Fatimid Caliphate
 * 7)  Sultanate of Rum
 * 8)  Umayyad Caliphate
 * 9)  Mamluk

Central Asia and Iran (8 articles)

 * 1)  Aq Qoyunlu
 * 2)  Göktürks
 * 3)  Golden Horde
 * 4)  Seljuk Empire
 * 5)  Kara Koyunlu
 * 6)  Muslim conquest of Persia
 * 7)  Khwarazmian dynasty
 * 8)  Uyghur Khaganate

Southern Asia (3 articles)

 * 1)  Delhi Sultanate
 * 2)  Muslim conquests of the Indian subcontinent
 * 3)  Vijayanagara Empire

Eastern Asia (13 articles)

 * 1)  An Lushan Rebellion
 * 2)  Five Dynasties and Ten Kingdoms period
 * 3)  Goryeo
 * 4)  Heian period
 * 5)  Great Jin
 * 6)  Liao dynasty
 * 7)  Mongol Empire (Level 3)
 * 8)  Ninja
 * 9)  Song dynasty
 * 10)  Sui dynasty
 * 11)  Tang dynasty (Level 3)
 * 12)  Tibetan Empire
 * 13)  Yuan dynasty

Southeastern Asia (7 articles)

 * 1)  Champa
 * 2)  Khmer Empire
 * 3)  Majapahit
 * 4)  Malacca Sultanate
 * 5)  Pagan Kingdom
 * 6)  Srivijaya
 * 7)  Trần dynasty

Americas (7 articles)

 * 1)   Aztec (Level 3)
 * 2)   Inca Empire (Level 3)
 * 3)  Chimú culture
 * 4)  Mississippian culture
 * 5)  Moche culture
 * 6)  Pre-Columbian era
 * 7)  Wari culture

General (8 articles)

 * 1)  Age of Discovery (Level 3)
 * 2)  Magellan–Elcano circumnavigation
 * 3)  Little Ice Age
 * 4)  Early modern period
 * 5)  Renaissance (Level 3)
 * 6)  Scientific revolution (Level 3)
 * 7)  Seven Years' War
 * 8)  Treaty of Tordesillas

Colonial empires (5 articles)

 * 1)  British Empire (Level 3)
 * 2)  French colonial empire
 * 3)   Portuguese Empire
 * 4)  Spanish Empire
 * 5)  Columbian Exchange

Basics (4 articles)

 * 1)  Age of Enlightenment (Level 3)
 * 2)  Reformation (Level 3)
 * 3)  Thirty Years' War
 * 4)  Counter-Reformation

Western Europe (15 articles)

 * 1)   1755 Lisbon earthquake
 * 2)  Anglo-Dutch Wars
 * 3)  Eighty Years' War
 * 4)  Enclosure
 * 5)  English Civil War
 * 6)  French Revolution (Level 3)
 * 7)  French Revolutionary Wars
 * 8)  French Wars of Religion
 * 9)  Huguenots
 * 10)  Italian Wars
 * 11)  Prussia
 * 12)  Puritans
 * 13)  Spanish Inquisition
 * 14)  War of the Austrian Succession
 * 15)   War of the Spanish Succession

Eastern Europe and Central (16 articles)

 * 1)  Cossacks
 * 2)  Cossack Hetmanate
 * 3)  Crimean Khanate
 * 4)  Great Northern War
 * 5)  Great Turkish War
 * 6)  House of Romanov
 * 7)  Khanate of Kazan
 * 8)   Polish–Lithuanian Commonwealth
 * 9)  Partitions of Poland
 * 10)  Union of Lublin
 * 11)   Livonian War
 * 12)  Muscovite–Lithuanian Wars
 * 13)  Ottoman wars in Europe
 * 14)   Polish–Muscovite War
 * 15)  Tsardom of Russia
 * 16)  Oprichnina

Americas (9 articles)

 * 1)   American Revolutionary War
 * 2)  European colonization of the Americas (Level 3)
 * 3)  British colonization of the Americas
 * 4)  Spanish colonization of the Americas
 * 5)  Spanish conquest of the Aztec Empire
 * 6)  Spanish conquest of the Inca Empire
 * 7)  French and Indian War
 * 8)  Lewis and Clark Expedition
 * 9)  Spanish American wars of independence

Africa (9 articles)

 * 1)  Slavery in Africa
 * 2)  Atlantic slave trade
 * 3)  Bornu Empire
 * 4)  Kingdom of Mutapa
 * 5)  Ashanti Empire
 * 6)  Kingdom of Kongo
 * 7)  Oyo Empire
 * 8)  Funj Sultanate of Sennar
 * 9)  Hausa Kingdoms

Basics (2 articles)

 * 1)  Dutch East India Company
 * 2)   East India Company

Central and Western Asia (5 articles)

 * 1)  Dzungar Khanate
 * 2)  Kazakh Khanate
 * 3)  Khanate of Bukhara
 * 4)  Khanate of Sibir
 * 5)  Safavid dynasty

Eastern and Southeastern Asia (12 articles)

 * 1)  Ayutthaya Kingdom
 * 2)  1556 Shaanxi earthquake
 * 3)  Edo period
 * 4)  Tokugawa shogunate
 * 5)  Japanese invasions of Korea
 * 6)  Joseon
 * 7)  Lan Xang
 * 8)  Lê dynasty
 * 9)  Ming dynasty
 * 10)  Qing dynasty
 * 11)  Sino-Burmese War
 * 12)  Taungoo Dynasty

Southern Asia (5 articles)

 * 1)  Great Bengal famine of 1770
 * 2)  Deccan sultanates
 * 3)  Maratha Empire
 * 4)  Mughal Empire (Level 3)
 * 5)  Sikh Empire

General (36 articles)

 * 1)  Modern history (Level 2)
 * 2)  1918 flu pandemic
 * 3)   1973 oil crisis
 * 4)  Abolitionism (Level 3)
 * 5)  Civil rights movements
 * 6)   Cold War (Level 3)
 * 7)  Collective farming
 * 8)  Decolonization
 * 9)  Financial crisis of 2007–2008
 * 10)  Great Depression (Level 3)
 * 11)  Green Revolution
 * 12)   Industrial Revolution (Level 3)
 * 13)  Information Age
 * 14)  New Imperialism
 * 15)  Post–World War II economic expansion
 * 16)  Space exploration (Level 3)
 * 17)   Space Race
 * 18)  War on Terror
 * 19)  Women's suffrage (Level 3)
 * 20)   World War I (Level 3)
 * 21)  Assassination of Archduke Franz Ferdinand of Austria
 * 22)  Balfour Declaration
 * 23)  Balkans Campaign (World War I)
 * 24)  Eastern Front (World War I)
 * 25)  Italian Front (World War I)
 * 26)  Middle Eastern theatre of World War I
 * 27)  Western Front (World War I)
 * 28)  World War II (Level 3)
 * 29)   Atomic bombings of Hiroshima and Nagasaki
 * 30)   Attack on Pearl Harbor
 * 31)   Battle of the Atlantic
 * 32)  Eastern Front (World War II)
 * 33)  Mediterranean and Middle East theatre of World War II
 * 34)  Pacific War
 * 35)  Western Front (World War II)
 * 36)  Yalta Conference

Basics (8 articles)

 * 1)  Austrian Empire
 * 2)  Austria-Hungary
 * 3)  Congress of Vienna
 * 4)  European integration
 * 5)   The Holocaust (Level 3)
 * 6)  Iron Curtain
 * 7)  Revolutions of 1848
 * 8)  Treaty of Versailles

Western Europe (19 articles)

 * 1)  Belgian Revolution
 * 2)   Berlin Wall
 * 3)   Dreyfus affair
 * 4)  Franco-Prussian War
 * 5)  German Confederation
 * 6)  German Empire
 * 7)  German reunification
 * 8)  Great Famine
 * 9)  Italian unification
 * 10)  July Revolution
 * 11)   Napoleonic Wars
 * 12)  Nazi Germany
 * 13)  Nazi concentration camps
 * 14)  Paris Commune
 * 15)  Sinking of the RMS Titanic
 * 16)   Spanish Civil War
 * 17)  The Troubles
 * 18)  Unification of Germany
 * 19)   Battle of Britain

Eastern Europe (25 articles)

 * 1)  Balkan Wars
 * 2)   Chernobyl disaster
 * 3)  Congress of Berlin
 * 4)  Crimean War
 * 5)  Czechoslovakia
 * 6)  Eastern Bloc
 * 7)  French invasion of Russia
 * 8)  Greek War of Independence
 * 9)  Hungarian Revolution of 1956
 * 10)   Polish–Soviet War
 * 11)  Prague Spring
 * 12)  1905 Russian Revolution
 * 13)  Revolutions of 1989
 * 14)  Russian Civil War
 * 15)  Russian Empire (Level 3)
 * 16)  Russian Revolution
 * 17)  Russo-Turkish War
 * 18)  Solidarity (Polish trade union)
 * 19)   Soviet Union (Level 3)
 * 20)  Dissolution of the Soviet Union
 * 21)  Great Purge
 * 22)  Gulag
 * 23)  Holodomor
 * 24)  Population transfer in the Soviet Union
 * 25)  Yugoslavia

Americas (22 articles)

 * 1)   American Civil War
 * 2)  American Indian Wars
 * 3)  American frontier
 * 4)  Civil Rights Movement
 * 5)  Confederate States of America
 * 6)  Cuban Missile Crisis
 * 7)  Cuban Revolution
 * 8)  Dust Bowl
 * 9)  Empire of Brazil
 * 10)  Gran Colombia
 * 11)  Haitian Revolution
 * 12)  Manhattan Project
 * 13)  Mexican War of Independence
 * 14)  Mexican Revolution
 * 15)  Mexican–American War
 * 16)  New Deal
 * 17)  Paraguayan War
 * 18)   September 11 attacks
 * 19)  Spanish–American War
 * 20)  Wall Street Crash of 1929
 * 21)  War of 1812
 * 22)  War of the Pacific

Eastern Asia (18 articles)

 * 1)  1931 China floods
 * 2)  Boxer Rebellion
 * 3)  Chinese Civil War
 * 4)  Cultural Revolution
 * 5)  Empire of Japan
 * 6)  First Opium War
 * 7)  First Sino-Japanese War
 * 8)  Great Leap Forward
 * 9)  Korean War
 * 10)  Meiji Restoration
 * 11)  Russo-Japanese War
 * 12)  Second Opium War
 * 13)  Second Sino-Japanese War
 * 14)   Nanking Massacre
 * 15)  Taiping Rebellion
 * 16)   Tiananmen Square protests of 1989
 * 17)  Unequal treaty
 * 18)  Xinhai Revolution

Southern Asia (7 articles)

 * 1)  1970 Bhola cyclone
 * 2)  Bangladesh Liberation War
 * 3)  British Raj
 * 4)   Indian independence movement
 * 5)  Indian Rebellion of 1857
 * 6)  Partition of India
 * 7)  Sri Lankan Civil War

Southeastern Asia (11 articles)

 * 1)   2004 Indian Ocean earthquake and tsunami
 * 2)  Dutch East Indies
 * 3)  French Indochina
 * 4)  Indonesian National Revolution
 * 5)  Nguyễn dynasty
 * 6)  Philippine–American War
 * 7)  Philippine Revolution
 * 8)  Konbaung Dynasty
 * 9)  Vietnam War
 * 10)  Khmer Rouge
 * 11)  First Indochina War

Western Asia (8 articles)

 * 1)  Arab–Israeli conflict
 * 2)   Armenian Genocide
 * 3)  Israeli Declaration of Independence
 * 4)  Gulf War
 * 5)  Iraq War
 * 6)  Israeli–Palestinian conflict
 * 7)  Turkish War of Independence
 * 8)  Young Turks

Central Asia and Iran (5 articles)

 * 1)  War in Afghanistan (1978–present)
 * 2)  The Great Game
 * 3)  Iran–Iraq War
 * 4)   Iranian Revolution
 * 5)  Persian Constitutional Revolution

Africa (16 articles)

 * 1)  Algerian War
 * 2)  Angolan Civil War
 * 3)  Anglo-Zulu War
 * 4)   Apartheid
 * 5)  Arab Spring
 * 6)  Biafra
 * 7)   Congo Free State
 * 8)  Ethiopian Civil War
 * 9)  Mahdist War
 * 10)  Nigerian Civil War
 * 11)  Rwandan genocide
 * 12)  Scramble for Africa (Level 3)
 * 13)   Second Boer War
 * 14)  Second Congo War
 * 15)  Second Italo-Ethiopian War
 * 16)  Sokoto Caliphate

Europe (2 articles)

 * 1)  Knossos
 * 2)  Pompeii

Africa (6 articles)

 * 1)  Carthage
 * 2)  Great Zimbabwe
 * 3)  Memphis
 * 4)  Meroë
 * 5)  Thebes
 * 6)   Timbuktu

Americas (5 articles)

 * 1)  Cahokia
 * 2)  Tenochtitlan
 * 3)  Teotihuacan
 * 4) Tikal
 * 5)  Tiwanaku

Asia (14 articles)

 * 1)  Antioch
 * 2)  Babylon
 * 3)  Çatalhöyük
 * 4)  Jericho
 * 5)  Mohenjo-daro
 * 6)  Nineveh
 * 7)  Palmyra
 * 8)  Persepolis
 * 9)  Petra
 * 10)  Susa
 * 11)  Troy
 * 12)  Tyre
 * 13)  Ugarit
 * 14)  Ur

History of science and technology (21 articles)

 * 1)   History of science (Level 2)
 * 2)  History of technology (Level 3)
 * 3)  History of agriculture (Level 3)
 * 4)  History of medicine (Level 3)
 * 5)  History of mathematics (Level 3)
 * 6)  History of astronomy
 * 7)  History of biology
 * 8)  History of chemistry
 * 9)  History of communication
 * 10)  History of writing
 * 11)   History of computing hardware
 * 12)  History of economic thought
 * 13)  History of geography
 * 14)  History of geology
 * 15)   Geological history of Earth
 * 16)  History of linguistics
 * 17)  History of physics
 * 18)  History of psychology
 * 19)  History of sociology
 * 20)  History of transport
 * 21)  History of aviation

History of other topics (16 articles)

 * 1)  History of art (Level 2)
 * 2)  History of architecture
 * 3)  History of atheism
 * 4)  History of film
 * 5)  Legal history
 * 6)  Evolutionary history of life
 * 7)  History of literature
 * 8)  Maritime history
 * 9)  Military history
 * 10)  History of music
 * 11)  History of religions
 * 12)  History of Hinduism
 * 13)   History of Buddhism
 * 14)  Jewish history
 * 15)  History of Christianity
 * 16)  History of Islam

Auxiliary sciences of history (12 articles)

 * 1)   Archaeology (Level 3)
 * 2)  Archaeological culture
 * 3)  Excavation (archaeology)
 * 4)  Radiocarbon dating
 * 5)  Chronology
 * 6)  Diplomatics
 * 7)  Epigraphy
 * 8)  Genealogy
 * 9)  Heraldry
 * 10)  Historiography
 * 11)  Conspiracy theory
 * 12)  Palaeography

=Geography (1162 articles)= See also Physical sciences/Earth science.

General (2 articles)

 * 1)  Geography (Level 2)
 * 2)  Exploration

Continents (9 articles)

 * 1)  Eurasia
 * 2)  Europe (Level 2)
 * 3)  Asia (Level 2)
 * 4)  Africa (Level 2)
 * 5)  Americas
 * 6)  North America (Level 2)
 * 7)  South America (Level 2)
 * 8)  Antarctica (Level 3)
 * 9)  Australia (continent)

Cartography (15 articles)

 * 1)  Cartography
 * 2)  Map (Level 3)
 * 3)   Map projection
 * 4)  Mercator projection
 * 5)  Atlas
 * 6)  Globe
 * 7)  Border
 * 8)  Surveying
 * 9)  Geographic coordinate system
 * 10)  Elevation
 * 11)  Latitude
 * 12)  Longitude
 * 13)  Geodetic datum
 * 14)  Geoid
 * 15)  Remote sensing

Earth (9 articles)

 * 1)  Equator
 * 2)  Tropic of Cancer
 * 3)  Tropic of Capricorn
 * 4)  Arctic Circle
 * 5)  Antarctic Circle
 * 6)  North Pole
 * 7)  South Pole
 * 8)  Prime meridian
 * 9)  International Date Line

Oceans and seas (56 articles)

 * 1)  Atlantic Ocean (Level 3)
 * 2)  Baltic Sea
 * 3)  Bay of Biscay
 * 4)  Black Sea
 * 5)  Caribbean Sea
 * 6)  Gulf of Guinea
 * 7)  Gulf of Mexico
 * 8)  Gulf Stream
 * 9)  Gulf of Saint Lawrence
 * 10)  Irish Sea
 * 11)  Labrador Sea
 * 12)  Mediterranean Sea (Level 3)
 * 13)  Adriatic Sea
 * 14)  Aegean Sea
 * 15)  Ionian Sea
 * 16)  North Sea
 * 17)  Norwegian Sea
 * 18)  Sargasso Sea
 * 19)  Sea of Azov
 * 20)  Sea of Marmara
 * 21)  Pacific Ocean (Level 3)
 * 22)  Gulf of Alaska
 * 23)  Bering Sea
 * 24)  Gulf of California
 * 25)  Gulf of Carpentaria
 * 26)  Coral Sea
 * 27)  East China Sea
 * 28)  Sea of Japan
 * 29)  Sea of Okhotsk
 * 30)  Philippine Sea
 * 31)  Seto Inland Sea
 * 32)  South China Sea
 * 33)  Tasman Sea
 * 34)  Gulf of Thailand
 * 35)  Yellow Sea
 * 36)  Indian Ocean (Level 3)
 * 37)  Andaman Sea
 * 38)  Arabian Sea
 * 39)  Bay of Bengal
 * 40)  Persian Gulf
 * 41)  Red Sea
 * 42)  Timor Sea
 * 43)  Arctic Ocean (Level 3)
 * 44)  Baffin Bay
 * 45)  Barents Sea
 * 46)  Beaufort Sea
 * 47)  Greenland Sea
 * 48)  Hudson Bay
 * 49)  Kara Sea
 * 50)  White Sea
 * 51)  Southern Ocean (Level 3)
 * 52)  Subantarctic
 * 53)  Great Australian Bight
 * 54)  Ross Sea
 * 55)  Scotia Sea
 * 56)  Weddell Sea

Straits (20 articles)

 * 1)  Gulf of Aden
 * 2)  Bass Strait
 * 3)  Bering Strait
 * 4)  Bosphorus
 * 5)  Cook Strait
 * 6)  Dardanelles
 * 7)  Strait of Dover
 * 8)  Drake Passage
 * 9)  English Channel
 * 10)  Straits of Florida
 * 11)  Strait of Gibraltar
 * 12)  Strait of Hormuz
 * 13)  Kattegat
 * 14)  Korea Strait
 * 15)  Strait of Magellan
 * 16)  Strait of Malacca
 * 17)  Mozambique Channel
 * 18)  Palk Strait
 * 19)  Skagerrak
 * 20)  Taiwan Strait

Shipping routes (2 articles)

 * 1)  Northeast Passage
 * 2)  Northwest Passage

Rivers (69 articles)
Africa (10 articles) North America (9 articles) South America (10 articles) Asia (26 articles) Europe (13 articles)
 * 1)  Congo River
 * 2)  Ubangi River
 * 3)  Limpopo River
 * 4)  Niger River
 * 5)  Nile (Level 3)
 * 6)  Blue Nile
 * 7)  White Nile
 * 8)  Orange River
 * 9)  Senegal River
 * 10)   Zambezi
 * 1)  Colorado River
 * 2)  Columbia River
 * 3)  Mackenzie River
 * 4)  Mississippi River (Level 3)
 * 5)  Missouri River
 * 6)  Ohio River
 * 7)  Rio Grande
 * 8)  Saint Lawrence River
 * 9)  Yukon River
 * 1)  Amazon River (Level 3)
 * 2)  Madeira River
 * 3)  Rio Negro
 * 4)  Tocantins River
 * 5)  Magdalena River
 * 6)  Orinoco
 * 7)  Paraná River
 * 8)  Río de la Plata
 * 9)  São Francisco River
 * 10)  Uruguay River
 * 1)  Yangtze (Level 3)
 * 2)  Yellow River
 * 3)  Mekong
 * 4)  Lena River
 * 5)  Yenisei River
 * 6)  Angara River
 * 7)  Ob River
 * 8)  Irtysh River
 * 9)  Indus River
 * 10)  Brahmaputra River
 * 11)  Amur River
 * 12)  Songhua River
 * 13)  Euphrates
 * 14)  Amu Darya
 * 15)  Ganges
 * 16)  Yamuna
 * 17)  Salween River
 * 18)  Ural River
 * 19)  Syr Darya
 * 20)  Irrawaddy River
 * 21)  Kolyma River
 * 22)  Pearl River (China)
 * 23)  Tigris
 * 24)  Godavari River
 * 25)  Krishna River
 * 26)  Jordan River

Oceania (1 article)
 * 1)  Volga River
 * 2)  Danube
 * 3)  Dnieper
 * 4)  Don River (Russia)
 * 5)  Pechora River
 * 6)  Neva River
 * 7)  Northern Dvina River
 * 8)  Rhine
 * 9)  Elbe
 * 10)  Vistula
 * 11)  Tagus
 * 12)  Loire
 * 13)  River Thames
 * 1)  Murray River

Lakes (37 articles)
Africa (10 articles) North America (10 articles) South America (2 articles) Antarctica (1 article) Asia (10 articles) Europe (3 articles) Oceania (1 article)
 * 1)  African Great Lakes
 * 2)  Lake Victoria (Level 3)
 * 3)  Lake Tanganyika
 * 4)  Lake Malawi
 * 5)  Lake Turkana
 * 6)  Lake Albert
 * 7)  Lake Mweru
 * 8)  Lake Chad
 * 9)  Lake Volta
 * 10)  Lake Kariba
 * 1)  Great Lakes (Level 3)
 * 2)  Lake Superior
 * 3)  Lake Michigan
 * 4)  Lake Huron
 * 5)  Lake Erie
 * 6)  Lake Ontario
 * 7)  Great Bear Lake
 * 8)  Great Slave Lake
 * 9)  Lake Winnipeg
 * 10)  Lake Nicaragua
 * 1)  Lake Maracaibo
 * 2)  Lake Titicaca
 * 1)  Lake Vostok
 * 1)  Caspian Sea (Level 3)
 * 2)  Lake Baikal
 * 3)  Lake Balkhash
 * 4)  Issyk-Kul
 * 5)  Lake Urmia
 * 6)  Lake Van
 * 7)  Qinghai Lake
 * 8)  Poyang Lake
 * 9)  Aral Sea
 * 10)  Dead Sea
 * 1)  Lake Ladoga
 * 2)  Lake Onega
 * 3)  Vänern
 * 1)  Lake Eyre

Canals (7 articles)

 * 1)  Erie Canal
 * 2)  Grand Canal (China)
 * 3)  Kiel Canal
 * 4)   Panama Canal
 * 5)  Saint Lawrence Seaway
 * 6)  Suez Canal
 * 7)  White Sea–Baltic Canal

Seabed (3 articles)

 * 1)  Great Barrier Reef (Level 3)
 * 2)  Mid-Atlantic Ridge
 * 3)  Mariana Trench

Waterfalls (4 articles)

 * 1)  Angel Falls
 * 2)  Iguazu Falls
 * 3)   Niagara Falls
 * 4)  Victoria Falls

Aquifers (1 article)

 * 1)  Great Artesian Basin

Africa (5 articles)

 * 1)  Azores
 * 2)  Canary Islands
 * 3)  Madeira
 * 4)  Réunion
 * 5)  Zanzibar

Americas (19 articles)
Caribbean (6 articles) North America (8 articles) South America (5 articles)
 * 1)  Hispaniola
 * 2)  Lesser Antilles
 * 3)  Curaçao
 * 4)  Guadeloupe
 * 5)  Martinique
 * 6)   Puerto Rico
 * 1)  Aleutian Islands
 * 2)  Canadian Arctic Archipelago
 * 3)  Banks Island
 * 4)  Baffin Island
 * 5)  Ellesmere Island
 * 6)  Victoria Island (Canada)
 * 7)  Greenland
 * 8)  Newfoundland
 * 1)  Easter Island
 * 2)  Galápagos Islands
 * 3)  Tierra del Fuego
 * 4)  Marajó
 * 5)  Falkland Islands

Asia (20 articles)

 * 1)  Hainan
 * 2)  Hokkaido
 * 3)  Honshu
 * 4)  Kuril Islands
 * 5)  Kyushu
 * 6)  Malay Archipelago
 * 7)  Borneo
 * 8)  Java
 * 9)  Lesser Sunda Islands
 * 10)  Bali
 * 11)  Timor
 * 12)  Luzon
 * 13)  Maluku Islands
 * 14)  Mindanao
 * 15)  Sumatra
 * 16)  Sulawesi
 * 17)  Visayas
 * 18)  Ryukyu Islands
 * 19)  Sakhalin
 * 20)  Shikoku

Europe (10 articles)

 * 1)   British Isles
 * 2)  Great Britain
 * 3)  Ireland
 * 4)  Crete
 * 5)  Corsica
 * 6)  Novaya Zemlya
 * 7)  Sardinia
 * 8)  Sicily
 * 9)  Svalbard
 * 10)  Zealand

Oceania (9 articles)

 * 1)  French Polynesia
 * 2)  Guam
 * 3)  Hawaii
 * 4)  New Britain
 * 5)  New Caledonia
 * 6)  New Guinea
 * 7)  North Island
 * 8)  South Island
 * 9)  Tasmania

Antarctica (1 article)

 * 1)  Alexander Island

Africa (2 articles)

 * 1)  Cape of Good Hope
 * 2)  Horn of Africa

Americas (3 articles)

 * 1)  Baja California Peninsula
 * 2)   Cape Horn
 * 3)  Yucatán Peninsula

Asia (6 articles)

 * 1)  Anatolia
 * 2)  Arabian Peninsula
 * 3)  Indochina
 * 4)  Malay Peninsula
 * 5)  Kamchatka Peninsula
 * 6)  Sinai Peninsula

Europe (3 articles)

 * 1)  Balkans
 * 2)  Iberian Peninsula
 * 3)  Kola Peninsula

Antarctica (1 article)

 * 1)  Antarctic Peninsula

Land relief (73 articles)

 * 1)  Ring of Fire

Africa (7 articles)

 * 1)  Aïr Mountains
 * 2)  Atlas Mountains
 * 3)  Drakensberg
 * 4)  Ethiopian Highlands
 * 5)  Great Rift Valley
 * 6)  Sahel
 * 7)  Tassili n'Ajjer

Americas (15 articles)
North America (8 articles) South America (7 articles)
 * 1)  Appalachian Mountains
 * 2)  Canadian Shield
 * 3)   Grand Canyon (Level 3)
 * 4)  Great Plains
 * 5)  Pacific Coast Ranges
 * 6)  Prairie
 * 7)  Sierra Nevada
 * 8)  Rocky Mountains (Level 3)
 * 1)  Andes (Level 3)
 * 2)  Altiplano
 * 3)  Brazilian Highlands
 * 4)  Cerrado
 * 5)  Gran Chaco
 * 6)  Guiana Shield
 * 7)  Pampas

Asia (18 articles)
Western Asia (5 articles) Eastern Asia (4 articles) Central and Northern Asia (3 articles) Southern Asia (5 articles)
 * 1)  Eurasian Steppe
 * 1)  Caucasus Mountains
 * 2)  Iranian Plateau
 * 3)  Hindu Kush
 * 4)  Najd
 * 5)  Zagros Mountains
 * 1)  North China Plain
 * 2)  Tibetan Plateau
 * 3)  Kunlun Mountains
 * 4)  Yunnan–Guizhou Plateau
 * 1)  Altai Mountains
 * 2)  Tian Shan
 * 3)  West Siberian Plain
 * 1)  Deccan Plateau
 * 2)  Himalayas (Level 3)
 * 3)  Indo-Gangetic Plain
 * 4)  Karakoram
 * 5)  Western Ghats

Europe (8 articles)

 * 1)  Alps (Level 3)
 * 2)  Apennine Mountains
 * 3)  Balkan Mountains
 * 4)  Carpathian Mountains
 * 5)  East European Plain
 * 6)  Pyrenees
 * 7)  Scandinavian Mountains
 * 8)  Ural Mountains

Oceania (3 articles)

 * 1)  Great Dividing Range
 * 2)  Outback
 * 3)  Uluru

Antarctica (1 article)

 * 1)  Transantarctic Mountains

Mountain peaks (20 articles)

 * 1)  Aconcagua
 * 2)  Mont Blanc
 * 3)  Denali
 * 4)  K2
 * 5)  Krakatoa
 * 6)  Mount Elbrus
 * 7)   Mount Etna
 * 8)  Mount Everest (Level 3)
 * 9)  Mount Fuji
 * 10)  Mount Kailash
 * 11)  Mount Kenya
 * 12)  Mount Kilimanjaro
 * 13)  Mauna Loa
 * 14)  Mount Olympus
 * 15)   Mount Pinatubo
 * 16)  Mount St. Helens
 * 17)  Mount Tai
 * 18)  Mount Vesuvius
 * 19)  Puncak Jaya
 * 20)  Vinson Massif

Deserts (9 articles)

 * 1)  Arabian Desert
 * 2)  Atacama Desert
 * 3)  Chihuahuan Desert
 * 4)  Gobi Desert
 * 5)  Kalahari Desert
 * 6)  Karakum Desert
 * 7)  Mojave Desert
 * 8)  Sahara (Level 3)
 * 9)  Taklamakan Desert

Forests (3 articles)

 * 1)  Amazon rainforest
 * 2)  Sundarbans
 * 3)  Virgin Komi Forests

Parks and preserves (17 articles)

 * 1)  National park
 * 2)  World Heritage Site

Africa (4 articles)

 * 1)  Banc d'Arguin National Park
 * 2)  Kavango–Zambezi Transfrontier Conservation Area
 * 3)  Ngorongoro Conservation Area
 * 4)  Serengeti National Park

Asia (1 article)

 * 1)   Kaziranga National Park

Europe (1 article)

 * 1)  Lake District

North America (6 articles)

 * 1)  Banff National Park
 * 2)  Great Smoky Mountains National Park
 * 3)  Mesa Verde National Park
 * 4)  Northeast Greenland National Park
 * 5)  Yellowstone National Park
 * 6)  Yosemite National Park

Oceania (2 articles)

 * 1)  Phoenix Islands Protected Area
 * 2)  Royal National Park

South America (1 article)

 * 1)  Tumucumaque Mountains National Park

Countries (208 articles)

 * 1)  Country (Level 2)

North America (23 articles)

 * 1)  Antigua and Barbuda
 * 2)  The Bahamas
 * 3)  Barbados
 * 4)  Belize
 * 5)  Canada (Level 3)
 * 6)  Costa Rica
 * 7)  Cuba
 * 8)  Dominica
 * 9)  Dominican Republic
 * 10)  El Salvador
 * 11)  Grenada
 * 12)  Guatemala
 * 13)  Haiti
 * 14)  Honduras
 * 15)  Jamaica
 * 16)  Mexico (Level 3)
 * 17)  Nicaragua
 * 18)  Panama
 * 19)  Saint Kitts and Nevis
 * 20)  Saint Lucia
 * 21)  Saint Vincent and the Grenadines
 * 22)  Trinidad and Tobago
 * 23)  United States (Level 3)

South America (12 articles)

 * 1)   Argentina (Level 3)
 * 2)  Bolivia
 * 3)   Brazil (Level 3)
 * 4)  Chile
 * 5)  Colombia
 * 6)  Ecuador
 * 7)  Guyana
 * 8)  Paraguay
 * 9)   Peru
 * 10)  Suriname
 * 11)  Uruguay
 * 12)  Venezuela

Northern Africa (6 articles)

 * 1)   Algeria
 * 2)   Egypt (Level 3)
 * 3)   Libya
 * 4)   Morocco
 * 5)  Sudan
 * 6)  Tunisia

Central Africa (11 articles)

 * 1)  Angola
 * 2)   Burundi
 * 3)  Cameroon
 * 4)  Central African Republic
 * 5)  Chad
 * 6)  Democratic Republic of the Congo (Level 3)
 * 7)  Republic of the Congo
 * 8)  Equatorial Guinea
 * 9)  Gabon
 * 10)  Rwanda
 * 11)  São Tomé and Príncipe

Eastern Africa (16 articles)

 * 1)   Comoros
 * 2)  Djibouti
 * 3)  Eritrea
 * 4)  Ethiopia (Level 3)
 * 5)  Kenya
 * 6)  Madagascar
 * 7)  Malawi
 * 8)  Mauritius
 * 9)  Mozambique
 * 10)  Seychelles
 * 11)  Somalia
 * 12)  South Sudan
 * 13)  Tanzania
 * 14)  Uganda
 * 15)  Zambia
 * 16)  Zimbabwe

Southern Africa (5 articles)

 * 1)  Botswana
 * 2)  Lesotho
 * 3)  Namibia
 * 4)   South Africa (Level 3)
 * 5)  Swaziland

Western Africa (16 articles)

 * 1)  Benin
 * 2)  Burkina Faso
 * 3)  Cape Verde
 * 4)  Ivory Coast
 * 5)  The Gambia
 * 6)  Ghana
 * 7)  Guinea
 * 8)  Guinea-Bissau
 * 9)  Liberia
 * 10)   Mali
 * 11)  Mauritania
 * 12)  Niger
 * 13)  Nigeria (Level 3)
 * 14)  Senegal
 * 15)  Sierra Leone
 * 16)  Togo

Central Asia (5 articles)

 * 1)  Kazakhstan
 * 2)  Kyrgyzstan
 * 3)  Tajikistan
 * 4)  Turkmenistan
 * 5)  Uzbekistan

Eastern Asia (5 articles)

 * 1)   China (Level 3)
 * 2)  Japan (Level 3)
 * 3)  Mongolia
 * 4)  North Korea
 * 5)  South Korea (Level 3)

Southern Asia (8 articles)

 * 1)   Afghanistan
 * 2)   Bangladesh (Level 3)
 * 3)   Bhutan
 * 4)  India (Level 3)
 * 5)  Maldives
 * 6)   Nepal
 * 7)   Pakistan (Level 3)
 * 8)  Sri Lanka

Southeastern Asia (11 articles)

 * 1)   Brunei
 * 2)   Cambodia
 * 3)  East Timor
 * 4)   Indonesia (Level 3)
 * 5)  Laos
 * 6)  Malaysia
 * 7)  Myanmar
 * 8)  Philippines (Level 3)
 * 9)   Singapore (Level 3)
 * 10)  Thailand (Level 3)
 * 11)  Vietnam (Level 3)

Western Asia (18 articles)

 * 1)  Armenia
 * 2)  Azerbaijan
 * 3)  Bahrain
 * 4)  Cyprus
 * 5)  Georgia
 * 6)  Iraq
 * 7)   Iran (Level 3)
 * 8)   Israel (Level 3)
 * 9)  Jordan
 * 10)  Kuwait
 * 11)   Lebanon
 * 12)  Oman
 * 13)  Qatar
 * 14)  Saudi Arabia (Level 3)
 * 15)  Syria
 * 16)   Turkey (Level 3)
 * 17)  United Arab Emirates
 * 18)  Yemen

Eastern Europe (22 articles)

 * 1)  Albania
 * 2)  Belarus
 * 3)  Bosnia and Herzegovina
 * 4)  Bulgaria
 * 5)  Croatia
 * 6)  Czech Republic
 * 7)  Estonia
 * 8)  Greece
 * 9)  Hungary
 * 10)  Kosovo
 * 11)  Latvia
 * 12)   Lithuania
 * 13)  Republic of Macedonia
 * 14)  Moldova
 * 15)  Montenegro
 * 16)  Poland (Level 3)
 * 17)   Romania
 * 18)   Russia (Level 3)
 * 19)  Serbia
 * 20)  Slovakia
 * 21)  Slovenia
 * 22)   Ukraine

Northern Europe (5 articles)

 * 1)   Denmark
 * 2)  Finland
 * 3)  Iceland
 * 4)  Norway
 * 5)   Sweden

Western Europe (18 articles)

 * 1)  Andorra
 * 2)  Austria
 * 3)   Belgium
 * 4)  France (Level 3)
 * 5)  Germany (Level 3)
 * 6)  Republic of Ireland
 * 7)  Italy (Level 3)
 * 8)  Liechtenstein
 * 9)  Luxembourg
 * 10)  Malta
 * 11)  Monaco
 * 12)  Netherlands
 * 13)  Portugal
 * 14)  San Marino
 * 15)  Spain (Level 3)
 * 16)  Switzerland
 * 17)   United Kingdom (Level 3)
 * 18)  Vatican City

Oceania (14 articles)

 * 1)  Australia (Level 3)
 * 2)  Fiji
 * 3)  Kiribati
 * 4)  Federated States of Micronesia
 * 5)  Marshall Islands
 * 6)  Nauru
 * 7)  New Zealand
 * 8)  Palau
 * 9)   Papua New Guinea
 * 10)  Samoa
 * 11)  Solomon Islands
 * 12)  Tonga
 * 13)  Tuvalu
 * 14)  Vanuatu

Unrecognized or largely unrecognized states, and disputed regions (11 articles)

 * 1)  Abkhazia
 * 2)  Cook Islands
 * 3)  Nagorno-Karabakh
 * 4)  Niue
 * 5)  Northern Cyprus
 * 6)  State of Palestine
 * 7)  Somaliland
 * 8)  South Ossetia
 * 9)   Taiwan
 * 10)  Transnistria
 * 11)  Western Sahara

State-like entities (1 article)

 * 1)  Holy See

Regions and country subdivisions (103 articles)

 * 1)  Arctic (Level 3)
 * 2)  Tropics

Africa (7 articles)

 * 1)  Central Africa
 * 2)  East Africa
 * 3)  North Africa
 * 4)  Puntland
 * 5)  Southern Africa
 * 6)  Sub-Saharan Africa
 * 7)  West Africa

Americas (20 articles)

 * 1)  Caribbean
 * 2)  Central America
 * 3)  French Guiana
 * 4)  Latin America
 * 5)  Minas Gerais
 * 6)  Patagonia
 * 7)  Southern Cone

Canada (4 articles)

 * 1)  Alberta
 * 2)  British Columbia
 * 3)  Ontario
 * 4)  Quebec

US (9 articles)

 * 1)  Alaska
 * 2)  California
 * 3)  Florida
 * 4)  Midwestern United States
 * 5)  New England
 * 6)  New York
 * 7)   Southern United States
 * 8)  Texas
 * 9)  Western United States

Europe and Russia (28 articles)

 * 1)  Crimea
 * 2)  Vojvodina

Belgium (2 articles)

 * 1)  Flanders
 * 2)  Wallonia

France (2 articles)

 * 1)  Brittany
 * 2)  Provence

Germany (1 article)

 * 1)  Bavaria

Italy (1 article)

 * 1)  Tuscany

Romania (3 articles)

 * 1)  Moldavia
 * 2)  Transylvania
 * 3)   Wallachia

Russia (7 articles)

 * 1)  Bashkortostan
 * 2)  Chechnya
 * 3)  Dagestan
 * 4)  Kaliningrad Oblast
 * 5)  Sakha Republic
 * 6)  Siberia
 * 7)  Tatarstan

Scandinavia (1 article)

 * 1)  Scandinavia

Spain (3 articles)

 * 1)  Basque Country (autonomous community)
 * 2)  Catalonia
 * 3)  Galicia

UK (5 articles)

 * 1)  England
 * 2)  Gibraltar
 * 3)   Northern Ireland
 * 4)  Scotland
 * 5)  Wales

Asia (41 articles)

 * 1)  Caucasus
 * 2)  Central Asia
 * 3)  East Asia
 * 4)  Greater Khorasan
 * 5)  Kashmir
 * 6)  Korea
 * 7)  Punjab
 * 8)  South Asia
 * 9)  Southeast Asia

China (15 articles)

 * 1)  Fujian
 * 2)  Guangdong
 * 3)  Guangxi
 * 4)  Hebei
 * 5)  Henan
 * 6)  Hubei
 * 7)  Hunan
 * 8)  Inner Mongolia
 * 9)  Jiangsu
 * 10)  Manchuria
 * 11)  Shandong
 * 12)  Sichuan
 * 13)   Tibet
 * 14)  Xinjiang
 * 15)  Yunnan

India (9 articles)

 * 1)  Andhra Pradesh
 * 2)  Bihar
 * 3)  Gujarat
 * 4)  Maharashtra
 * 5)  Northeast India
 * 6)  Rajasthan
 * 7)  Tamil Nadu
 * 8)  Uttar Pradesh
 * 9)  West Bengal

Indonesia (2 articles)

 * 1)  Aceh
 * 2)  Papua

Middle East (5 articles)

 * 1)  Eastern Arabia
 * 2)  Hejaz
 * 3)  Kurdistan
 * 4)  Levant
 * 5)  Middle East (Level 3)

Pakistan (2 articles)

 * 1)  Balochistan
 * 2)  Sindh

Oceania (5 articles)

 * 1)  Melanesia
 * 2)  Micronesia
 * 3)  New South Wales
 * 4)  Oceania (Level 2)
 * 5)  Polynesia

Urban studies and planning (18 articles)

 * 1)  City (Level 2)
 * 2)  Capital city
 * 3)  City block
 * 4)  Downtown
 * 5)  Ghetto
 * 6)  Industrial park
 * 7)  Park
 * 8)  Central Park
 * 9)  Rural area
 * 10)  Slum
 * 11)  Suburb
 * 12)  Town
 * 13)  Town square
 * 14)  Village
 * 15)  Urban planning
 * 16)  Urban design
 * 17)   Urbanization
 * 18)  Zoning

Northern Africa (18 articles)
Algeria (3 articles) Egypt (6 articles) Libya (2 articles) Morocco (4 articles) Sudan (2 articles)
 * 1)  Tunis
 * 1)  Algiers
 * 2)  Oran
 * 3)  Constantine
 * 1)  Cairo (Level 3)
 * 2)  Alexandria
 * 3)  Giza
 * 4)  Damietta
 * 5)  Luxor
 * 6)  Aswan
 * 1)  Tripoli
 * 2)  Benghazi
 * 1)  Casablanca
 * 2)  Rabat
 * 3)  Fez
 * 4)  Marrakesh
 * 1)  Khartoum
 * 2)  Omdurman

Central Africa (8 articles)
Cameroon (2 articles) Democratic Republic of the Congo (3 articles)
 * 1)  Brazzaville
 * 2)  Luanda
 * 3)  N'Djamena
 * 1)  Douala
 * 2)  Yaoundé
 * 1)  Kinshasa
 * 2)  Lubumbashi
 * 3)  Mbuji-Mayi

Eastern Africa (14 articles)
Kenya (2 articles) Mozambique (2 articles)
 * 1)  Addis Ababa
 * 2)  Antananarivo
 * 3)  Asmara
 * 4)  Dar es Salaam
 * 5)  Harare
 * 6)  Kampala
 * 7)  Kigali
 * 8)  Lilongwe
 * 9)  Lusaka
 * 10)  Mogadishu
 * 1)  Nairobi
 * 2)  Mombasa
 * 1)  Maputo
 * 2)  Beira

Southern Africa (5 articles)

 * 1)   Johannesburg
 * 2)   Cape Town
 * 3)  Durban
 * 4)  Pretoria
 * 5)  Port Elizabeth

Western Africa (19 articles)
Ghana (2 articles) Nigeria (8 articles)
 * 1)  Abidjan
 * 2)  Dakar
 * 3)  Bamako
 * 4)  Ouagadougou
 * 5)  Conakry
 * 6)  Freetown
 * 7)  Cotonou
 * 8)  Monrovia
 * 9)  Niamey
 * 1)  Accra
 * 2)  Kumasi
 * 1)  Lagos
 * 2)  Kano
 * 3)  Ibadan
 * 4)  Abuja
 * 5)  Kaduna
 * 6)  Benin City
 * 7)  Port Harcourt
 * 8)  Maiduguri

North America (42 articles)
Canada (5 articles) Mexico (10 articles) United States (27 articles)
 * 1)   Toronto
 * 2)  Montreal
 * 3)   Vancouver
 * 4)  Ottawa
 * 5)   Calgary
 * 1)  Mexico City (Level 3)
 * 2)  Tijuana
 * 3)  Puebla City
 * 4)  Guadalajara
 * 5)  Ciudad Juárez
 * 6)  León
 * 7)  Monterrey
 * 8)  Mérida
 * 9)  Acapulco
 * 10)  Veracruz
 * 1)  Atlanta
 * 2)  Baltimore
 * 3)  Boston
 * 4)  Charlotte
 * 5)   Chicago
 * 6)  Cincinnati
 * 7)  Cleveland
 * 8)   Dallas
 * 9)  Denver
 * 10)   Detroit
 * 11)  Houston
 * 12)  Las Vegas
 * 13)   Los Angeles
 * 14)   Miami
 * 15)  Minneapolis
 * 16)  New Orleans
 * 17)    New York City (Level 3)
 * 18)  Philadelphia
 * 19)  Phoenix
 * 20)  Pittsburgh
 * 21)  San Antonio
 * 22)  San Diego
 * 23)  San Francisco
 * 24)   San Jose
 * 25)  Seattle
 * 26)  St. Louis
 * 27)  Washington, D.C.

Central America and Caribbean (11 articles)

 * 1)  Santo Domingo
 * 2)  Havana
 * 3)  Guatemala City
 * 4)   San Juan
 * 5)  San Salvador
 * 6)  Managua
 * 7)  Port-au-Prince
 * 8)  San José
 * 9)  Panama City
 * 10)  Tegucigalpa
 * 11)  Kingston, Jamaica

South America (35 articles)
Argentina (3 articles) Bolivia (2 articles) Brazil (13 articles) Chile (2 articles) Colombia (5 articles) Ecuador (2 articles) Peru (3 articles) Venezuela (3 articles)
 * 1)  Asunción
 * 2)  Montevideo
 * 1)  Buenos Aires
 * 2)  Córdoba
 * 3)  Rosario
 * 1)  La Paz
 * 2)  Santa Cruz de la Sierra
 * 1)  Belém
 * 2)  Belo Horizonte
 * 3)  Brasília
 * 4)  Campinas
 * 5)  Curitiba
 * 6)  Fortaleza
 * 7)  Manaus
 * 8)  Porto Alegre
 * 9)  Recife
 * 10)  Rio de Janeiro
 * 11)  Salvador
 * 12)  São Luís
 * 13)  São Paulo (Level 3)
 * 1)  Santiago
 * 2)  Valparaíso
 * 1)  Bogotá
 * 2)  Medellín
 * 3)  Cali
 * 4)  Barranquilla
 * 5)  Cartagena
 * 1)  Guayaquil
 * 2)  Quito
 * 1)  Lima
 * 2)  Arequipa
 * 3)  Cusco
 * 1)  Caracas
 * 2)  Maracaibo
 * 3)  Valencia, Carabobo

Central Asia (4 articles)
Kazakhstan (2 articles) Uzbekistan (2 articles)
 * 1)  Almaty
 * 2)  Astana
 * 1)  Tashkent
 * 2)  Samarkand

Eastern Asia (53 articles)
China (34 articles) Japan (10 articles) North Korea (1 article) South Korea (6 articles) Mongolia (1 article) Taiwan (1 article)
 * 1)  Beijing (Level 3)
 * 2)  Changchun
 * 3)  Changsha
 * 4)  Chengdu
 * 5)  Chongqing
 * 6)  Dalian
 * 7)  Fuzhou
 * 8)  Guangzhou
 * 9)  Hangzhou
 * 10)  Harbin
 * 11)  Hefei
 * 12)   Hong Kong (Level 3)
 * 13)  Jinan
 * 14)  Kunming
 * 15)  Lanzhou
 * 16)  Lhasa
 * 17)  Luoyang
 * 18)   Macau
 * 19)  Nanchang
 * 20)  Nanjing
 * 21)  Nanning
 * 22)  Qingdao
 * 23)  Shanghai
 * 24)  Shantou
 * 25)  Shenyang
 * 26)  Shenzhen
 * 27)  Shijiazhuang
 * 28)  Suzhou
 * 29)  Taiyuan
 * 30)  Tianjin
 * 31)  Ürümqi
 * 32)  Wuhan
 * 33)  Xi'an
 * 34)  Zhengzhou
 * 1)  Tokyo (Level 3)
 * 2)  Osaka
 * 3)  Nagoya
 * 4)  Yokohama
 * 5)  Sapporo
 * 6)  Kobe
 * 7)  Kyoto
 * 8)  Fukuoka
 * 9)  Hiroshima
 * 10)  Kitakyushu
 * 1)  Pyongyang
 * 1)  Seoul
 * 2)  Busan
 * 3)  Incheon
 * 4)  Daegu
 * 5)  Daejeon
 * 6)  Gwangju
 * 1)  Ulaanbaatar
 * 1)  Taipei

Southern Asia (48 articles)
Bangladesh (3 articles) India (34 articles) Pakistan (9 articles)
 * 1)  Colombo
 * 2)  Kathmandu
 * 1)  Dhaka
 * 2)  Chittagong
 * 3)  Sylhet
 * 1)  Agra
 * 2)   Ahmedabad
 * 3)  Allahabad
 * 4)  Amritsar
 * 5)   Bangalore
 * 6)  Bhopal
 * 7)  Bhubaneswar
 * 8)  Chandigarh
 * 9)   Chennai
 * 10)  Coimbatore
 * 11)   Delhi (Level 3)
 * 12)  Guwahati
 * 13)  Hyderabad
 * 14)  Indore
 * 15)  Jaipur
 * 16)  Jodhpur
 * 17)  Kanpur
 * 18)  Kolkata
 * 19)  Lucknow
 * 20)  Ludhiana
 * 21)  Madurai
 * 22)   Mumbai (Level 3)
 * 23)  Mysore
 * 24)  Nagpur
 * 25)   Patna
 * 26)  Pune
 * 27)  Raipur
 * 28)  Ranchi
 * 29)  Srinagar
 * 30)  Surat
 * 31)  Thiruvananthapuram
 * 32)  Vadodara
 * 33)  Varanasi
 * 34)  Visakhapatnam
 * 1)   Karachi
 * 2)  Lahore
 * 3)  Faisalabad
 * 4)  Rawalpindi
 * 5)  Multan
 * 6)  Hyderabad, Sindh
 * 7)  Gujranwala
 * 8)  Peshawar
 * 9)  Islamabad

Southeastern Asia (24 articles)

 * 1)  Phnom Penh
 * 2)  Vientiane

Burma (2 articles) Indonesia (10 articles) Malaysia (2 articles) Philippines (4 articles) Thailand (2 articles) Vietnam (2 articles)
 * 1)  Yangon
 * 2)  Mandalay
 * 1)  Jakarta (Level 3)
 * 2)  Bandung
 * 3)  Surabaya
 * 4)  Medan
 * 5)  Palembang
 * 6)  Makassar
 * 7)  Semarang
 * 8)  Malang
 * 9)  Padang
 * 10)  Yogyakarta
 * 1)  Kuala Lumpur
 * 2)  Johor Bahru
 * 1)  Manila
 * 2)  Quezon City
 * 3)  Cebu City
 * 4)  Davao City
 * 1)  Bangkok
 * 2)  Chiang Mai
 * 1)  Ho Chi Minh City
 * 2)  Hanoi

Western Asia (42 articles)
Afghanistan (3 articles) Iraq (3 articles) Iran (8 articles) Israel (2 articles) Saudi Arabia (4 articles) Syria (2 articles) Turkey (9 articles) United Arab Emirates (2 articles) Yemen (2 articles)
 * 1)  Amman
 * 2)  Baku
 * 3)  Beirut
 * 4)  Gaza City
 * 5)  Muscat
 * 6)  Tbilisi
 * 7)  Yerevan
 * 1)  Kabul
 * 2)  Kandahar
 * 3)  Herat
 * 1)  Baghdad
 * 2)  Basra
 * 3)  Mosul
 * 1)  Tehran
 * 2)  Mashhad
 * 3)  Isfahan
 * 4)  Tabriz
 * 5)  Shiraz
 * 6)  Ahvaz
 * 7)  Qom
 * 8)  Kermanshah
 * 1)   Jerusalem (Level 3)
 * 2)   Tel Aviv
 * 1)  Mecca (Level 3)
 * 2)  Medina
 * 3)  Riyadh
 * 4)  Jeddah
 * 1)  Damascus
 * 2)  Aleppo
 * 1)  Istanbul (Level 3)
 * 2)  Ankara
 * 3)  İzmir
 * 4)  Bursa
 * 5)  Adana
 * 6)  Gaziantep
 * 7)  Konya
 * 8)  Antalya
 * 9)  Eskişehir
 * 1)  Abu Dhabi
 * 2)   Dubai
 * 1)  Sana'a
 * 2)  Aden

Eastern Europe (38 articles)
Poland (6 articles) Ukraine (6 articles) Russia (14 articles) Other Eastern Europe (12 articles)
 * 1)  Warsaw
 * 2)  Kraków
 * 3)  Wrocław
 * 4)  Poznań
 * 5)  Gdańsk
 * 6)  Katowice
 * 1)  Kiev
 * 2)  Kharkiv
 * 3)   Donetsk
 * 4)  Dnipropetrovsk
 * 5)  Odessa
 * 6)  Lviv
 * 1)  Moscow (Level 3)
 * 2)  Saint Petersburg
 * 3)  Novosibirsk
 * 4)  Nizhny Novgorod
 * 5)  Yekaterinburg
 * 6)  Samara
 * 7)  Omsk
 * 8)  Kazan
 * 9)  Chelyabinsk
 * 10)  Rostov-on-Don
 * 11)  Ufa
 * 12)  Volgograd
 * 13)  Perm
 * 14)  Vladivostok
 * 1)  Athens
 * 2)  Belgrade
 * 3)   Bratislava
 * 4)  Bucharest
 * 5)  Budapest
 * 6)  Minsk
 * 7)  Prague
 * 8)  Riga
 * 9)   Sarajevo
 * 10)  Sofia
 * 11)  Vilnius
 * 12)   Zagreb

Western Europe (51 articles)
Belgium (2 articles) France (7 articles) Germany (9 articles) Italy (8 articles) Netherlands (3 articles) Northern Europe (4 articles) Spain (5 articles) Switzerland (2 articles) UK and Ireland (9 articles) Other Western Europe (2 articles)
 * 1)  Antwerp
 * 2)  Brussels
 * 1)   Paris (Level 3)
 * 2)  Marseille
 * 3)  Lyon
 * 4)  Toulouse
 * 5)  Nice
 * 6)  Bordeaux
 * 7)  Strasbourg
 * 1)   Berlin
 * 2)  Hamburg
 * 3)  Munich
 * 4)  Cologne
 * 5)  Frankfurt
 * 6)  Stuttgart
 * 7)  Düsseldorf
 * 8)  Nuremberg
 * 9)  Dresden
 * 1)  Rome (Level 3)
 * 2)  Milan
 * 3)  Naples
 * 4)  Turin
 * 5)  Palermo
 * 6)  Genoa
 * 7)  Florence
 * 8)  Venice
 * 1)  Amsterdam
 * 2)  The Hague
 * 3)  Rotterdam
 * 1)  Copenhagen
 * 2)  Helsinki
 * 3)  Oslo
 * 4)   Stockholm
 * 1)  Madrid
 * 2)   Barcelona
 * 3)  Valencia
 * 4)  Seville
 * 5)  Zaragoza
 * 1)  Geneva
 * 2)  Zürich
 * 1)  London (Level 3)
 * 2)   Dublin
 * 3)  Birmingham
 * 4)   Glasgow
 * 5)  Edinburgh
 * 6)  Liverpool
 * 7)  Manchester
 * 8)  Leeds
 * 9)  Cardiff
 * 1)  Lisbon
 * 2)  Vienna

Australia (4 articles)

 * 1)   Brisbane
 * 2)   Melbourne
 * 3)   Perth
 * 4)   Sydney

New Zealand (2 articles)

 * 1)  Auckland
 * 2)  Wellington

=Arts (675 articles)=
 * 1)  Art
 * 2)  The arts (Level 1)

Architecture (59 articles)
See also Technology > Construction section


 * 1)  Architecture (Level 2)
 * 2)  Sacred architecture
 * 3)  Architectural drawing
 * 4)  Architectural theory
 * 5)  Proportion
 * 6)  Landscape architecture

Styles (16 articles)

 * 1)  Ancient Egyptian architecture
 * 2)  Ancient Greek architecture
 * 3)  Ancient Roman architecture
 * 4)  Baroque architecture
 * 5)  Byzantine architecture
 * 6)  Chinese architecture
 * 7)  Gothic architecture
 * 8)  Architecture of India
 * 9)  Islamic architecture
 * 10)  Megalith
 * 11)  Mesoamerican architecture
 * 12)  Architecture of Mesopotamia
 * 13)  Modern architecture
 * 14)  Neoclassical architecture
 * 15)  Renaissance architecture
 * 16)  Romanesque architecture

Specific structures (37 articles)

 * 1)  Acropolis of Athens
 * 2)  Alhambra
 * 3)  Angkor Wat (Level 3)
 * 4)  Borobudur
 * 5)  Burj Khalifa
 * 6)  Chartres Cathedral
 * 7)  Colosseum (Level 3)
 * 8)  Eiffel Tower
 * 9)  Empire State Building
 * 10)  Fallingwater
 * 11)  Florence Cathedral
 * 12)  Forbidden City
 * 13)  Great Sphinx of Giza
 * 14)  Great Wall of China (Level 3)
 * 15)  Guggenheim Museum Bilbao
 * 16)  Hagia Sophia
 * 17)  Kaaba
 * 18)  Kinkaku-ji
 * 19)  Leaning Tower of Pisa
 * 20)   Machu Picchu (Level 3)
 * 21)  Moscow Kremlin
 * 22)  Notre-Dame de Paris
 * 23)  Palace of Versailles
 * 24)   Palace of Westminster
 * 25)  Pantheon, Rome
 * 26)   Parthenon (Level 3)
 * 27)  Sagrada Família
 * 28)  St. Peter's Basilica
 * 29)  Statue of Liberty
 * 30)  Stonehenge (Level 3)
 * 31)  Sydney Opera House
 * 32)  Taj Mahal (Level 3)
 * 33)  Temple Mount
 * 34)  Villa Capra "La Rotonda"
 * 35)  Ziggurat of Ur
 * 36)  Seven Wonders of the Ancient World
 * 37)   Great Pyramid of Giza (Level 3)

Cultural venues (23 articles)

 * 1)  Movie theater
 * 2)  Museum (Level 3)
 * 3)  Music venue
 * 4)  Opera house

Americas (5 articles)

 * 1)  American Museum of Natural History
 * 2)  Metropolitan Museum of Art
 * 3)  Museum of Modern Art
 * 4)  National Gallery of Art
 * 5)  Smithsonian Institution

Asia (2 articles)

 * 1)  National Museum of China
 * 2)  National Palace Museum

Europe (12 articles)

 * 1)  British Museum
 * 2)  Hermitage Museum
 * 3)  Louvre
 * 4)  Musée d'Orsay
 * 5)  Musée National d'Art Moderne
 * 6)  Museo del Prado
 * 7)  National Gallery
 * 8)  Natural History Museum, London
 * 9)  Rijksmuseum
 * 10)  Tate Modern
 * 11)  Uffizi
 * 12)  Vatican Museums

Basic concepts in literature (31 articles)

 * 1)  Literature (Level 2)
 * 2)  Book (Level 2)
 * 3)  Character
 * 4)  Fiction (Level 3)
 * 5)  Children's literature
 * 6)  Fable
 * 7)   Fairy tale
 * 8)  Fantasy
 * 9)  Horror fiction
 * 10)  Legend
 * 11)  Romance novel
 * 12)  Satire
 * 13)  Science fiction
 * 14)  Time travel
 * 15)  Literary criticism
 * 16)  Narrative
 * 17)  Non-fiction
 * 18)  Biography
 * 19)  Dictionary
 * 20)  Encyclopedia
 * 21)  Thesaurus
 * 22)  Novel (Level 3)
 * 23)  Poetry (Level 3)
 * 24)  Epic poetry
 * 25)  Ghazal
 * 26)  Haiku
 * 27)  Ode
 * 28)  Rhyme
 * 29)  Sonnet
 * 30)  Prose (Level 3)
 * 31)  Short story (Level 3)

Literatures by language and area (17 articles)

 * 1)  African literature
 * 2)  Ancient Greek literature
 * 3)  Arabic literature
 * 4)  Chinese literature
 * 5)  English literature
 * 6)  French literature
 * 7)  German literature
 * 8)  Indian literature
 * 9)  Italian literature
 * 10)  Japanese literature
 * 11)  Jewish literature
 * 12)  Latin American literature
 * 13)  Latin literature
 * 14)  Persian literature
 * 15)  Russian literature
 * 16)  Scandinavian literature
 * 17)  Spanish literature

Nonfiction (53 articles)
Nonfiction of antiquity (25 articles) Nonfiction of early printed book era (12 articles) Nonfiction of modern era (16 articles)
 * 1)  Anabasis (Xenophon)
 * 2)  Analects
 * 3)  Apology (Plato)
 * 4)  The Art of War
 * 5)  The Book of Healing
 * 6)   The Consolation of Philosophy
 * 7)  Dead Sea Scrolls
 * 8)  Euclid's Elements
 * 9)  Hippocratic Corpus
 * 10)  Histories (Herodotus)
 * 11)  History of the Peloponnesian War
 * 12)  I Ching
 * 13)  The Incoherence of the Philosophers
 * 14)  The Maxims of Ptahhotep
 * 15)  Metaphysics (Aristotle)
 * 16)  Muqaddimah
 * 17)  Nicomachean Ethics
 * 18)  Organon
 * 19)  Physics (Aristotle)
 * 20)  Poetic Edda
 * 21)  Popol Vuh
 * 22)  Republic (Plato)
 * 23)  Septuagint
 * 24)  Summa Theologica
 * 25)  Vulgate
 * 1)  The Birds of America
 * 2)  Critique of Pure Reason
 * 3)  A Dictionary of the English Language
 * 4)  Discourse on the Method
 * 5)   Encyclopædia Britannica
 * 6)  Gutenberg Bible
 * 7)  The History of the Decline and Fall of the Roman Empire
 * 8)   King James Version
 * 9)  Leviathan
 * 10)  Opticks
 * 11)  Philosophiæ Naturalis Principia Mathematica
 * 12)  The Prince
 * 1)  The Common Sense Book of Baby and Child Care
 * 2)  The Communist Manifesto
 * 3)  Capital: Critique of Political Economy
 * 4)  The Descent of Man, and Selection in Relation to Sex
 * 5)  The General Theory of Employment, Interest and Money
 * 6)  The Golden Bough
 * 7)  Night
 * 8)  On the Origin of Species
 * 9)  Oxford English Dictionary
 * 10)  Principia Mathematica
 * 11)  Quotations from Chairman Mao Tse-tung
 * 12)  Silent Spring
 * 13)  The Structure of Scientific Revolutions
 * 14)  The Souls of Black Folk
 * 15)  The Varieties of Religious Experience
 * 16)  The Wealth of Nations

Fiction (88 articles)
Fiction of antiquity (15 articles) Fiction of early printed book era (17 articles) Fiction of modern era (53 articles) Comics (3 articles)
 * 1)  The Bacchae
 * 2)  The Golden Ass
 * 3)  Investiture of the Gods
 * 4)  Journey to the West
 * 5)  Kadambari
 * 6)  Kathasaritsagara
 * 7)  Lysistrata
 * 8)  Medea
 * 9)  Oresteia
 * 10)  Oedipus Rex
 * 11)  One Thousand and One Nights
 * 12)  Panchatantra
 * 13)  Romance of the Three Kingdoms
 * 14)  The Tale of Genji
 * 15)  Water Margin
 * 1)  Candide
 * 2)  Doctor Faustus
 * 3)  Don Quixote (Level 3)
 * 4)  Dream of the Red Chamber
 * 5)  Goethe's Faust
 * 6)  Gulliver's Travels
 * 7)  Hamlet
 * 8)  King Lear
 * 9)  Macbeth
 * 10)  A Midsummer Night's Dream
 * 11)  Othello
 * 12)  La Princesse de Clèves
 * 13)  Robinson Crusoe
 * 14)  Romeo and Juliet
 * 15)  Tartuffe
 * 16)  The Tempest
 * 17)  Utopia
 * 1)  Adventures of Huckleberry Finn
 * 2)  Alice's Adventures in Wonderland
 * 3)  Anna Karenina
 * 4)   Brave New World
 * 5)   The Brothers Karamazov
 * 6)  Buddenbrooks
 * 7)  The Call of the Wild
 * 8)  The Catcher in the Rye
 * 9)  A Christmas Carol
 * 10)  The Chronicles of Narnia
 * 11)  Crime and Punishment
 * 12)  The Crucible
 * 13)  A Doll's House
 * 14)  Eugene Onegin
 * 15)   Frankenstein
 * 16)  The Grapes of Wrath
 * 17)  Gravity's Rainbow
 * 18)  Great Expectations
 * 19)  The Great Gatsby
 * 20)  Harry Potter
 * 21)  Heart of Darkness
 * 22)  The Hunchback of Notre-Dame
 * 23)  The Importance of Being Earnest
 * 24)  In Search of Lost Time
 * 25)  Jane Eyre
 * 26)  Les Misérables
 * 27)  The Little Prince
 * 28)  Lolita
 * 29)   The Lord of the Rings
 * 30)  Madame Bovary
 * 31)  The Metamorphosis
 * 32)  Middlemarch
 * 33)  Midnight's Children
 * 34)  Moby-Dick
 * 35)  Nineteen Eighty-Four
 * 36)  On the Road
 * 37)  One Hundred Years of Solitude
 * 38)  Pride and Prejudice
 * 39)  The Scarlet Letter
 * 40)  Snow Country
 * 41)  Sons and Lovers
 * 42)  The Sound and the Fury
 * 43)  The Sun Also Rises
 * 44)  Things Fall Apart
 * 45)  The Three Musketeers
 * 46)  To the Lighthouse
 * 47)  Ulysses
 * 48)  Uncle Tom's Cabin
 * 49)  Waiting for Godot
 * 50)  War and Peace
 * 51)  The War of the Worlds
 * 52)  The Wind in the Willows
 * 53)  Wuthering Heights
 * 1)  The Adventures of Tintin
 * 2)  Asterix
 * 3)  Peanuts

Poetic works (27 articles)
Poetic works of antiquity (14 articles) Poetic works of early printed book era (5 articles) Poetic works of modern era (8 articles)
 * 1)  Aeneid
 * 2)  Beowulf
 * 3)  The Canterbury Tales
 * 4)  Divine Comedy
 * 5)  Diwan-e Shams-e Tabrizi
 * 6)  Epic of Gilgamesh (Level 3)
 * 7)  Iliad
 * 8)   Mahabharata (Level 3)
 * 9)  Masnavi
 * 10)  Metamorphoses
 * 11)  Nibelungenlied
 * 12)  Odyssey
 * 13)  Shahnameh (Level 3)
 * 14)  The Song of Roland
 * 1)  Shakespeare's sonnets
 * 2)  Paradise Lost
 * 3)  Rubaiyat of Omar Khayyam
 * 4)  Oku no Hosomichi
 * 5)  Songs of Innocence and of Experience
 * 1)   The Cantos
 * 2)  Duino Elegies
 * 3)  L'après-midi d'un faune
 * 4)  Leaves of Grass
 * 5)  The Raven
 * 6)  The Rime of the Ancient Mariner
 * 7)  A Season in Hell
 * 8)  The Waste Land

Basics (14 articles)

 * 1)  Music (Level 2)
 * 2)  Choir
 * 3)  Counterpoint
 * 4)  Harmony
 * 5)  Chord
 * 6)  Melody
 * 7)  Music theory
 * 8)  Music video
 * 9)  Musical notation
 * 10)  Orchestra (Level 3)
 * 11)   Rapping
 * 12)  Rhythm
 * 13)  Scale (music)
 * 14)  Singing (Level 3)

Music genres and forms (39 articles)

 * 1)  Arabic music
 * 2)  Ballad
 * 3)  Baroque music
 * 4)  Fugue
 * 5)   Blues
 * 6)  Christmas carol
 * 7)  Classical music (Level 3)
 * 8)  Aria
 * 9)  Concerto
 * 10)  Opera (Level 3)
 * 11)  Sonata
 * 12)  Symphony
 * 13)  Country music
 * 14)   Disco
 * 15)  Electronic music
 * 16)   Folk music (Level 3)
 * 17)  Funk
 * 18)  Gamelan
 * 19)   Gregorian chant
 * 20)   Hip hop music (Level 3)
 * 21)  Hymn
 * 22)  Indian classical music
 * 23)   Jazz (Level 3)
 * 24)   Bossa nova
 * 25)   Ragtime
 * 26)  Music of China
 * 27)  National anthem
 * 28)  Pop music (Level 3)
 * 29)  Reggae
 * 30)   Rhythm and blues
 * 31)   Soul music
 * 32)   Rock music (Level 3)
 * 33)  Heavy metal music
 * 34)  Punk rock
 * 35)  Rock and roll
 * 36)   Salsa music
 * 37)  Samba
 * 38)  Singer-songwriter
 * 39)  Sub-Saharan African music traditions

Musical instruments (42 articles)

 * 1)  Musical instrument (Level 3)
 * 2)  Electronic musical instrument
 * 3)  Bass guitar
 * 4)  Electric guitar
 * 5)   Synthesizer
 * 6)  Percussion instrument
 * 7)  Bell
 * 8)  Cymbal
 * 9)  Djembe
 * 10)  Drum
 * 11)  Piano
 * 12)  Xylophone
 * 13)   String instrument
 * 14)   Cello
 * 15)   Double bass
 * 16)  Guitar
 * 17)  Harp
 * 18)  Harpsichord
 * 19)  Lute
 * 20)  Lyre
 * 21)  Mandolin
 * 22)  Viola
 * 23)  Violin
 * 24)  Wind instrument
 * 25)  Accordion
 * 26)  Bagpipes
 * 27)  Brass instrument
 * 28)  Horn
 * 29)  Trombone
 * 30)  Trumpet
 * 31)  Tuba
 * 32)  Harmonica
 * 33)  Pipe organ
 * 34)  Woodwind instrument
 * 35)   Bassoon
 * 36)  Clarinet
 * 37)  Flute
 * 38)  Pan flute
 * 39)   Recorder
 * 40)  Western concert flute
 * 41)  Oboe
 * 42)    Saxophone

Traditional (1 article)

 * 1)  Auld Lang Syne

Baroque (5 articles)

 * 1)  Brandenburg Concertos
 * 2)  The Four Seasons (Vivaldi)
 * 3)  Mass in B minor
 * 4)  Messiah (Handel)
 * 5)  The Well-Tempered Clavier

Classical (10 articles)

 * 1)  Carmina Burana (Orff)
 * 2)  The Creation (Haydn)
 * 3)  La mer (Debussy)
 * 4)  Nocturnes (Chopin)
 * 5)  Piano Sonata No. 14 (Beethoven)
 * 6)  Scheherazade (Rimsky-Korsakov)
 * 7)  Symphony No. 5 (Beethoven)
 * 8)  Symphony No. 8 (Mahler)
 * 9)  Symphony No. 9 (Beethoven)
 * 10)  Symphony No. 41 (Mozart)

Opera (7 articles)

 * 1)  Carmen
 * 2)  Don Giovanni
 * 3)  Madama Butterfly
 * 4)  The Magic Flute
 * 5)  Der Ring des Nibelungen
 * 6)  La traviata
 * 7)  Tristan und Isolde

Ballet (3 articles)

 * 1)  The Nutcracker
 * 2)  The Rite of Spring
 * 3)  Swan Lake

Musicals (4 articles)

 * 1)  Hair
 * 2)  Oklahoma!
 * 3)  The Phantom of the Opera
 * 4)  West Side Story

Modern (18 articles)

 * 1)  The Dark Side of the Moon
 * 2)  Guantanamera
 * 3)  Heartbreak Hotel
 * 4)  Imagine (John Lennon song)
 * 5)  The Internationale
 * 6)  Johnny B. Goode
 * 7)  Kind of Blue
 * 8)  Like a Rolling Stone
 * 9)   Pet Sounds
 * 10)  Respect (song)
 * 11)  Rhapsody in Blue
 * 12)  Sgt. Pepper's Lonely Hearts Club Band
 * 13)  Stairway to Heaven
 * 14)  This Land Is Your Land
 * 15)  Thriller (Michael Jackson album)
 * 16)  We Shall Overcome
 * 17)  What's Going On (Marvin Gaye album)
 * 18)  White Christmas

Concepts (6 articles)

 * 1)  Performing arts (Level 2)
 * 2)  Acting
 * 3)  Audience
 * 4)  Costume
 * 5)  Joke
 * 6)  Parody

Forms (38 articles)

 * 1)  Acrobatics
 * 2)  Circus
 * 3)  Clown
 * 4)  Magic (illusion)
 * 5)  Sleight of hand
 * 6)  Escapology
 * 7)  Mime artist
 * 8)  Performance art
 * 9)  Performance poetry
 * 10)  Puppetry
 * 11)  Stand-up comedy

Dance (13 articles)

 * 1)  Dance (Level 3)
 * 2)  Ballet
 * 3)  Ballroom dance
 * 4)  Belly dance
 * 5)  Bharatanatyam
 * 6)  Bolero
 * 7)  Choreography
 * 8)  Flamenco
 * 9)  Hip-hop dance
 * 10)  Folk dance
 * 11)  Jazz dance
 * 12)  Modern dance
 * 13)  Tango
 * 14)  Waltz

Theatre (14 articles)

 * 1)  Theatre (Level 3)
 * 2)  Broadway theatre
 * 3)  Comedy (Level 3)
 * 4)  Drama
 * 5)  Improvisational theatre
 * 6)  Kabuki
 * 7)  Musical theatre (Level 3)
 * 8)  Noh
 * 9)  Peking opera
 * 10)  Stage
 * 11)  Stagecraft
 * 12)  Theatre of ancient Greece
 * 13)  Tragedy (Level 3)
 * 14)  West End theatre

Pre-modern art (12 articles)

 * 1)  Academic art
 * 2)   Baroque (Level 3)
 * 3)  Classicism
 * 4)  Dutch Golden Age painting
 * 5)  Empire style
 * 6)  Gothic art (Level 3)
 * 7)  Mannerism
 * 8)  Prehistoric art
 * 9)  Realism
 * 10)  Rock art
 * 11)  Rococo
 * 12)  Romanesque art

Modern art (16 articles)

 * 1)  Modern art
 * 2)  Abstract art
 * 3)  Abstract expressionism
 * 4)  Art Deco
 * 5)  Art Nouveau
 * 6)  Avant-garde
 * 7)  Cubism
 * 8)   Dada
 * 9)  Expressionism
 * 10)  Futurism
 * 11)  Impressionism
 * 12)  Neoclassicism
 * 13)  Post-Impressionism
 * 14)  Pre-Raphaelite Brotherhood
 * 15)  Surrealism
 * 16)  Symbolism

Contemporary art (6 articles)

 * 1)  Contemporary art
 * 2)  Land art
 * 3)  Minimalism
 * 4)  Conceptual art
 * 5)  Outsider art
 * 6)  Pop art

Non-Western art traditions (7 articles)

 * 1)  African art
 * 2)  Chinese art
 * 3)  Indian art
 * 4)  Islamic art
 * 5)  Persian art
 * 6)  Ukiyo-e
 * 7)  Visual arts by indigenous peoples of the Americas

Concepts and forms (25 articles)

 * 1)  Visual arts (Level 2)
 * 2)  Calligraphy
 * 3)  Ceramic art
 * 4)  Collage
 * 5)  Comics
 * 6)  Manga
 * 7)  Drawing (Level 3)
 * 8)  Engraving
 * 9)  Fashion
 * 10)  Folk art
 * 11)   Graffiti
 * 12)  Handicraft
 * 13)  Illustration
 * 14)  Mosaic
 * 15)  Mural
 * 16)  Optical illusion
 * 17)  Origami
 * 18)  Painting (Level 3)
 * 19)  Oil painting
 * 20)  Watercolor painting
 * 21)  Perspective (graphical)
 * 22)  Religious art
 * 23)   Sculpture (Level 3)
 * 24)  Textile arts
 * 25)  Wood carving

Painting (21 articles)

 * 1)  A Sunday Afternoon on the Island of La Grande Jatte
 * 2)  Along the River During the Qingming Festival
 * 3)  Arnolfini Portrait
 * 4)  The Art of Painting
 * 5)  The Birth of Venus (Botticelli)
 * 6)  Campbell's Soup Cans
 * 7)  The Death of Socrates
 * 8)  The Garden of Earthly Delights
 * 9)  Guernica
 * 10)   The Last Supper (Leonardo da Vinci)
 * 11)  Le Déjeuner sur l’herbe
 * 12)  Les Demoiselles d'Avignon
 * 13)   Mona Lisa (Level 3)
 * 14)  The Night Watch
 * 15)  Nighthawks
 * 16)  The Persistence of Memory
 * 17)  The Scream
 * 18)   Sistine Chapel
 * 19)  The Starry Night
 * 20)  The Treachery of Images
 * 21)  Water Lilies

Sculpture (9 articles)

 * 1)  David (Michelangelo)
 * 2)  Ecstasy of Saint Teresa
 * 3)  Fountain
 * 4)  Olmec colossal heads
 * 5)  Pietà (Michelangelo)
 * 6)  Terracotta Army
 * 7)  The Thinker
 * 8)  Venus de Milo
 * 9)  Venus of Willendorf

Other media (3 articles)

 * 1)  Bayeux Tapestry
 * 2)  Book of Kells
 * 3)  The Great Wave off Kanagawa

Design (6 articles)

 * 1)  Design
 * 2)  Graphic design
 * 3)  Typography
 * 4)  Interior design
 * 5)  Industrial design
 * 6)  Web design

Digital art (2 articles)

 * 1)  Digital art
 * 2)  Computer graphics

Filmmaking (52 articles)

 * 1)   Film (Level 2)
 * 2)  Animation (Level 3)
 * 3)  Anime
 * 4)   Silent film
 * 5)  Filmmaking
 * 6)  Cinematography
 * 7)  Special effect
 * 8)  Studio system

Cinema by country (8 articles)

 * 1)  Cinema of the United States
 * 2)  Cinema of France
 * 3)  Cinema of India
 * 4)  Bollywood
 * 5)  Cinema of Japan
 * 6)  Cinema of China
 * 7)  Cinema of the Soviet Union
 * 8)  Cinema of Nigeria

Film festival and awards (3 articles)

 * 1)  Film festival
 * 2)  Cannes Film Festival
 * 3)  Academy Awards

Films (34 articles)
Animation (1 article) Art film (1 articles) Comedy (1 article) ''Documentary (1 article) Drama film (11 articles) Epic/Historical (7 articles) Horror/Thriller (2 articles) Musical (3 articles) Romance film (2 articles) Science fiction/Fantasy (4 articles) Western (1 article)
 * 1)  Snow White and the Seven Dwarfs
 * 1)  The Mirror
 * 1)  Dr. Strangelove
 * 1)   Triumph of the Will
 * 1)  8½
 * 2)  Bicycle Thieves
 * 3)  Breathless
 * 4)  Children of Paradise
 * 5)  Citizen Kane
 * 6)  The Godfather
 * 7)  L'Atalante
 * 8)  La Dolce Vita
 * 9)  La Grande Illusion
 * 10)  The Rules of the Game
 * 11)  Tokyo Story
 * 1)  The Apu Trilogy
 * 2)  Battleship Potemkin
 * 3)  The Birth of a Nation
 * 4)  Lawrence of Arabia
 * 5)  The Passion of Joan of Arc
 * 6)  Seven Samurai
 * 7)  The Seventh Seal
 * 1)  Psycho
 * 2)  Vertigo
 * 1)  The Jazz Singer
 * 2)  Singin' in the Rain
 * 3)  The Sound of Music
 * 1)  Casablanca
 * 2)  Gone With the Wind
 * 1)  2001: A Space Odyssey
 * 2)   Metropolis
 * 3)  Star Wars
 * 4)  The Wizard of Oz
 * 1)  Stagecoach

Fictional characters (28 articles)
Mythological and Biblical characters are listed under Philosophy and religion

Western folklore (9 articles)

 * 1)  King Arthur
 * 2)  Baba Yaga
 * 3)  Cinderella
 * 4)  Don Juan
 * 5)  Faust
 * 6)  Hansel and Gretel
 * 7)   Robin Hood
 * 8)  Merlin
 * 9)  Santa Claus

Eastern folklore (2 articles)

 * 1)  Aladdin
 * 2)  Hua Mulan

Literature and drama (6 articles)

 * 1)  James Bond
 * 2)  Count Dracula
 * 3)  Sherlock Holmes
 * 4)  Peter Pan
 * 5)  Tarzan
 * 6)  Winnie-the-Pooh

Film, television, and games (5 articles)

 * 1)  Mickey Mouse
 * 2)  Donald Duck
 * 3)  Godzilla
 * 4)  King Kong
 * 5)   Mario

Superheroes (6 articles)

 * 1)  Superhero
 * 2)   Superman
 * 3)   Batman
 * 4)  Wonder Woman
 * 5)  Spider-Man
 * 6)  X-Men

=Philosophy and religion (419 articles)=
 * See also: Philosophers and Religious figures

Basics (5 articles)

 * 1)  Philosophy (Level 2)
 * 2)  Philosophy of mind
 * 3)   Philosophy of language
 * 4)   Philosophy of mathematics
 * 5)  Political philosophy

History of philosophy (10 articles)

 * 1)  Western philosophy (Level 3)
 * 2)  Ancient Greek philosophy (Level 3)
 * 3)  Medieval philosophy (Level 3)
 * 4)  Renaissance philosophy
 * 5)  Modern philosophy
 * 6)  Contemporary philosophy (Level 3)
 * 7)  Eastern philosophy (Level 3)
 * 8)  Chinese philosophy
 * 9)  Indian philosophy
 * 10)  Ancient philosophy

Ethics (17 articles)
Concepts (11 articles)
 * 1)  Ethics (Level 2)
 * 1)  Conscience
 * 2)   Free will (Level 3)
 * 3)  Golden Rule (Level 3)
 * 4)  Good and evil (Level 3)
 * 5)  Is–ought problem
 * 6)  Liberty (Level 3)
 * 7)  Morality
 * 8)  Plagiarism
 * 9)  Principle
 * 10)  Safety
 * 11)  Virtue
 * 12)  Wisdom

Approaches (4 articles)
 * 1)  Deontological ethics
 * 2)  Nihilism
 * 3)  Relativism
 * 4)  Utilitarianism

Logic (8 articles)

 * 1)  Logic (Level 2)
 * 2)  Argument
 * 3)  A priori and a posteriori
 * 4)  Deductive reasoning
 * 5)  Inductive reasoning
 * 6)  Inference
 * 7)  Dialectic
 * 8)   Paradox

Epistemology (17 articles)

 * 1)   Epistemology (Level 3)

Concepts (10 articles) Approaches (6 articles)
 * 1)  Knowledge (Level 2)
 * 2)  Truth (Level 3)
 * 3)  Reason (Level 3)
 * 4)  Belief (Level 3)
 * 5)  Opinion
 * 6)  Experience
 * 7)  Common sense
 * 8)  Thought experiment
 * 9)  Paradigm
 * 10)  Superstition
 * 1)  Pragmatism (Level 3)
 * 2)   Empiricism
 * 3)  Rationalism
 * 4)  Naturalism
 * 5)  Reductionism
 * 6)  Occam's razor

Metaphysics (12 articles)
Concepts (6 articles)
 * 1)  Metaphysics (Level 3)
 * 1)  Existence (Level 3)
 * 2)  Ontology (Level 3)
 * 3)  Causality
 * 4)  Reality
 * 5)  Abstraction
 * 6)  Nothing

Approaches (5 articles)
 * 1)  Determinism
 * 2)  Idealism
 * 3)  Materialism
 * 4)  Monism
 * 5)  Dualism

Aesthetics (4 articles)
Concepts (3 articles)
 * 1)  Aesthetics (Level 3)
 * 1)  Beauty
 * 2)  Perfection
 * 3)  Sublime

Philosophy of science (6 articles)

 * 1)  Philosophy of science (Level 3)
 * 2)  Fact
 * 3)  Theory
 * 4)  Hypothesis
 * 5)  Pseudoscience
 * 6)   Parapsychology

Religious philosophy (5 articles)

 * 1)  Philosophy of religion
 * 2)  Absolute
 * 3)  Christian philosophy
 * 4)  Islamic philosophy
 * 5)  Buddhist philosophy

Philosophical schools and traditions (11 articles)

 * 1)  Analytic philosophy (Level 3)
 * 2)  Skepticism
 * 3)  Modernism (Level 3)
 * 4)  Postmodernism (Level 3)
 * 5)  Phenomenology
 * 6)  Positivism
 * 7)  Romanticism (Level 3)
 * 8)  Thomism
 * 9)  Stoicism
 * 10)  Platonic realism
 * 11)  Legalism

Basics (7 articles)

 * 1)  Religion (Level 2)
 * 2)  Theology
 * 3)  Freedom of religion
 * 4)  Secularism (Level 3)
 * 5)  Comparative religion
 * 6)  Folk religion
 * 7)  Mysticism

Deity (4 articles)

 * 1)  Deity (Level 3)
 * 2)   God (Level 3)
 * 3)  Goddess
 * 4)  Mother goddess

Practices (19 articles)

 * 1)  Prayer (Level 3)
 * 2)  Meditation (Level 3)
 * 3)  Worship (Level 3)
 * 4)  Apologetics
 * 5)  Celibacy
 * 6)  Religious conversion
 * 7)  Fasting
 * 8)  Heresy
 * 9)  Icon
 * 10)  Iconoclasm
 * 11)  Idolatry
 * 12)  Liturgy
 * 13)  Pilgrimage
 * 14)  Prophecy
 * 15)  Relic
 * 16)  Ritual
 * 17)  Sacrifice
 * 18)  Spiritual practice
 * 19)  Veneration

Beliefs (19 articles)

 * 1)  Spirituality (Level 3)
 * 2)  Faith
 * 3)  Sacred
 * 4)  Supernatural
 * 5)  Creation myth
 * 6)  Origin myth
 * 7)  Devil
 * 8)  Curse
 * 9)  Religious experience
 * 10)  Resurrection
 * 11)  Animism
 * 12)  Eschatology
 * 13)  Totemism
 * 14)  Theophany
 * 15)  Astrology
 * 16)  Astrological sign
 * 17)  Magic
 * 18)   Witchcraft
 * 19)  Divination

Death and afterlife (14 articles)

 * 1)  Afterlife (Level 3)
 * 2)  Soul (Level 3)
 * 3)  Spirit
 * 4)  Reincarnation
 * 5)  Heaven
 * 6)  Hell
 * 7)  Underworld
 * 8)  Funeral
 * 9)  Cemetery
 * 10)  Crypt
 * 11)  Burial
 * 12)  Cremation
 * 13)   Mummy
 * 14)  Death (personification)

Institutions (11 articles)

 * 1)  State religion
 * 2)  Temple
 * 3)  Shrine
 * 4)  Monastery
 * 5)  Altar
 * 6)  Priest
 * 7)  Anti-clericalism
 * 8)  Sect
 * 9)  Cult
 * 10)  Creed
 * 11)  Schism

Theistic philosophies (11 articles)

 * 1)  Theism (Level 3)
 * 2)  Monotheism
 * 3)  Unitarianism
 * 4)  Deism
 * 5)  Pantheism
 * 6)  Panentheism
 * 7)  Polytheism
 * 8)  Paganism
 * 9)  Syncretism
 * 10)  Fundamentalism
 * 11)  Orthodoxy

Non-theistic philosophies (3 articles)

 * 1)  Atheism (Level 3)
 * 2)  Agnosticism (Level 3)
 * 3)  Freethought

Main branches (6 articles)

 * 1)   Judaism (Level 3)
 * 2)    Christianity (Level 3)
 * 3)   Islam (Level 3)
 * 4)  Gnosticism
 * 5)  Druze
 * 6)  Bahá'í Faith

Common concepts (10 articles)

 * 1)  Bible (Level 3)
 * 2)  Holy Spirit
 * 3)  Jehovah
 * 4)  Messiah
 * 5)  Angel
 * 6)   Satan
 * 7)  Sin
 * 8)  Salvation
 * 9)  Predestination
 * 10)  Ten Commandments

Judaism (10 articles)

 * 1)  Talmud (Level 3)
 * 2)  Torah
 * 3)  Tanakh
 * 4)  Targum
 * 5)  Halakha
 * 6)  Orthodox Judaism
 * 7)  Conservative Judaism
 * 8)  Reform Judaism
 * 9)  Synagogue
 * 10)  Rabbi

Christianity (32 articles)

 * 1)  Catholicism
 * 2)  Catholic Church (Level 3)
 * 3)  Eastern Catholic Churches
 * 4)  Pope
 * 5)  Eastern Orthodox Church (Level 3)
 * 6)  Russian Orthodox Church
 * 7)  Protestantism (Level 3)
 * 8)  Anglicanism
 * 9)  Baptists
 * 10)   Calvinism
 * 11)  Evangelicalism
 * 12)  Lutheranism
 * 13)  Methodism
 * 14)  Mormonism
 * 15)  Pentecostalism
 * 16)   Quakers
 * 17)   Seventh-day Adventist Church
 * 18)  Oriental Orthodoxy
 * 19)  Coptic Orthodox Church of Alexandria
 * 20)  Ethiopian Orthodox Tewahedo Church
 * 21)  Christian Church
 * 22)  Church
 * 23)  Cathedral
 * 24)  Old Testament
 * 25)  New Testament
 * 26)  Grace
 * 27)  Ecumenism
 * 28)  Purgatory
 * 29)  Sacred tradition
 * 30)  Second Coming
 * 31)  Trinity
 * 32)  Nontrinitarianism

Islam (15 articles)

 * 1)  Islamic schools and branches
 * 2)  Sunni Islam (Level 3)
 * 3)  Shia Islam (Level 3)
 * 4)  Sufism
 * 5)  Quran (Level 3)
 * 6)  Hadith
 * 7)  Sharia
 * 8)  Fiqh
 * 9)  Halal
 * 10)  Haram
 * 11)   Five Pillars of Islam
 * 12)  Hajj
 * 13)  Allah
 * 14)    Mosque
 * 15)  Imam

Major religions (8 articles)

 * 1)    Hinduism (Level 3)
 * 2)   Buddhism (Level 3)
 * 3)   Jainism (Level 3)
 * 4)   Sikhism (Level 3)
 * 5)  Confucianism (Level 3)
 * 6)  Taoism (Level 3)
 * 7)  Shinto (Level 3)
 * 8)  Manichaeism

Common concepts (6 articles)

 * 1)  Dharma
 * 2)  Karma
 * 3)  Om
 * 4)  Qi
 * 5)  Tantra
 * 6)  Yin and yang
 * 7)  Yoga

Hinduism (18 articles)

 * 1)   Bhagavad Gita (Level 3)
 * 2)  Upanishads (Level 3)
 * 3)  Vedas (Level 3)
 * 4)  Shaivism
 * 5)  Vaishnavism
 * 6)  Shaktism
 * 7)  Avatar
 * 8)  Brahma
 * 9)  Brahman
 * 10)  Ganesha
 * 11)  Kali
 * 12)   Krishna
 * 13)  Kumbh Mela
 * 14)   Rama
 * 15)  Ramayana
 * 16)  Shiva
 * 17)  Vedanta
 * 18)  Vishnu

Buddhism (9 articles)

 * 1)  Vajrayana (Level 3)
 * 2)  Theravada (Level 3)
 * 3)  Pāli Canon
 * 4)  Mahayana (Level 3)
 * 5)  Avalokiteśvara
 * 6)  Diamond Sutra
 * 7)  Four Noble Truths
 * 8)  Nirvana
 * 9)  Zen

Sikhism (2 articles)

 * 1)  Guru Granth Sahib
 * 2)  Golden Temple

Taoism (2 articles)

 * 1)  Tao Te Ching
 * 2)  Zhuangzi

Shinto (1 article)

 * 1)  Kojiki

Other religions (18 articles)

 * 1)  Shamanism (Level 3)
 * 2)  Spiritualism
 * 3)   Zoroastrianism (Level 3)
 * 4)  Avesta
 * 5)  Prehistoric religion
 * 6)  Ancient Mesopotamian religion
 * 7)  Ancient Egyptian religion
 * 8)  Ancient Greek religion
 * 9)   Eleusinian Mysteries
 * 10)  Religion in ancient Rome
 * 11)  Roman festivals
 * 12)  Germanic paganism
 * 13)  Religion in pre-Islamic Arabia
 * 14)  Chinese folk religion
 * 15)  Traditional African religions
 * 16)  Yoruba religion
 * 17)  Haitian Vodou
 * 18)  Aztec religion
 * 19)  Maya religion
 * 20)  Veneration of the dead

Western esotericism and New religious movements (7 article)

 * 1)  Western esotericism (Level 3)
 * 2)   Freemasonry
 * 3)  Rosicrucianism
 * 4)  New religious movement
 * 5)  Modern Paganism
 * 6)  Wicca
 * 7)  New Age

General (3 articles)

 * 1)  Mythology (Level 2)
 * 2)  Comparative mythology
 * 3)  Folklore

By culture (13 articles)

 * 1)  Australian Aboriginal mythology
 * 2)  Celtic polytheism
 * 3)  Chinese mythology
 * 4)  Egyptian mythology
 * 5)  Greek mythology
 * 6)  Hindu mythology
 * 7)  Japanese mythology
 * 8)  Korean mythology
 * 9)  Norse mythology
 * 10)  Persian mythology
 * 11)  Roman mythology
 * 12)  Slavic mythology
 * 13)  Tengri

Abrahamic and Judaic Mythology (5 articles)

 * 1)  Adam and Eve
 * 2)  Cain and Abel
 * 3)  Lilith
 * 4)  Noah
 * 5)  Yahweh

African mythology (1 article)

 * 1)  Anansi

Chinese mythology (4 articles)

 * 1)  Chinese dragon
 * 2)  Jade Emperor
 * 3)  Three Sovereigns and Five Emperors
 * 4)  Yellow Emperor

Egyptian mythology (8 articles)

 * 1)  Amun
 * 2)  Anubis
 * 3)  Hathor
 * 4)  Horus
 * 5)  Isis
 * 6)  Osiris
 * 7)  Ra
 * 8)  Thoth

Greek mythological heroes (6 articles)

 * 1)  Achilles
 * 2)  Aeneas
 * 3)  Heracles
 * 4)  Odysseus
 * 5)  Oedipus
 * 6)  Perseus

Greek deities (12 articles)

 * 1)  Aphrodite
 * 2)   Apollo
 * 3)  Ares
 * 4)  Artemis
 * 5)  Athena
 * 6)  Gaia
 * 7)  Hades
 * 8)  Hera
 * 9)  Hermes
 * 10)  Hephaestus
 * 11)  Poseidon
 * 12)  Zeus

Roman deities (4 articles)

 * 1)  Jupiter
 * 2)   Mars
 * 3)  Minerva
 * 4)  Venus

Native American mythology (3 articles)

 * 1)  Coyote
 * 2)  Great Spirit
 * 3)  Quetzalcoatl

Norse mythology (3 articles)

 * 1)  Odin
 * 2)  Freyja
 * 3)  Thor

Shinto mythology (1 article)

 * 1)  Amaterasu

Mythological creatures (21 articles)

 * 1)  Legendary creature
 * 2)  Centaur
 * 3)  Chimera
 * 4)  Demon
 * 5)  Dragon
 * 6)  Fairy
 * 7)  Garuda
 * 8)  Ghost
 * 9)  Giant
 * 10)  Jinn
 * 11)   Leprechaun
 * 12)  Loch Ness Monster
 * 13)  Magician
 * 14)  Mermaid
 * 15)  Pegasus
 * 16)  Siren
 * 17)  Sphinx
 * 18)  Unicorn
 * 19)  Vampire
 * 20)  Werewolf
 * 21)  Zombie

Mythological places (5 articles)

 * 1)   Atlantis
 * 2)  Camelot
 * 3)  El Dorado
 * 4)  Shangri-La
 * 5)  Utopia

=Everyday life (486 articles)=

General (2 articles)

 * 1)  Personal life (Level 3)
 * 2)  Housekeeping

Clothing and fashion (36 articles)

 * 1)  Clothing (Level 2)
 * 2)  Hairstyle
 * 3)  Beard
 * 4)  Moustache
 * 5)  Shaving
 * 6)  Wig
 * 7)  Undergarment
 * 8)   Bra
 * 9)  Sock
 * 10)  Diaper
 * 11)  Dress
 * 12)  Skirt
 * 13)  Shirt
 * 14)  Trousers
 * 15)  Shoe
 * 16)  Boot
 * 17)  Hat
 * 18)  Mask
 * 19)  Veil
 * 20)  Scarf
 * 21)  Coat
 * 22)  Cloak
 * 23)  Glove
 * 24)  Belt
 * 25)  Button
 * 26)  Zipper
 * 27)  Jewellery
 * 28)  Handbag
 * 29)  Wallet
 * 30)  Umbrella
 * 31)  Cosmetics
 * 32)  Perfume
 * 33)  Uniform
 * 34)  Pajamas
 * 35)  Swimsuit
 * 36)  Nudity

Basics (7 articles)

 * 1)  Color (Level 3)
 * 2)  CMYK color model
 * 3)  Color theory
 * 4)  Primary color
 * 5)  Color vision
 * 6)  Gloss (optics)
 * 7)  RGB color model

Color terms (11 articles)

 * 1)  White
 * 2)  Black
 * 3)  Grey
 * 4)  Red
 * 5)  Orange
 * 6)  Yellow
 * 7)  Green
 * 8)  Blue
 * 9)  Pink
 * 10)  Purple
 * 11)  Brown

 Cooking, food and drink (118 articles)
For fruits, vegetables, herbs and animals kept for food, see Biology/Organisms

Basics (33 articles)

 * 1)  Eating
 * 2)  Food (Level 2)
 * 3)  Drink
 * 4)  Meal
 * 5)  Breakfast
 * 6)  Lunch
 * 7)  Dinner
 * 8)  Dessert
 * 9)  Dieting
 * 10)  Vegetarianism
 * 11)   Veganism

Cuisine (8 articles)

 * 1)  Cuisine
 * 2)  Chinese cuisine
 * 3)  Fast food
 * 4)  French cuisine
 * 5)  Japanese cuisine
 * 6)  Indian cuisine
 * 7)   Italian cuisine
 * 8)  Middle Eastern cuisine

Preparation and serving (14 articles)

 * 1)  Bar
 * 2)  Brewing
 * 3)  Canning
 * 4)  Cooking (Level 3)
 * 5)  Baking
 * 6)  Cooking oil
 * 7)  Palm oil
 * 8)  Frying
 * 9)  Grilling
 * 10)  Steaming
 * 11)  Food preservation
 * 12)  Pickling
 * 13)  Smoking (cooking)
 * 14)  Restaurant

Dairy and analogues (13 articles)

 * 1)   Milk (Level 3)
 * 2)   Butter
 * 3)  Cream
 * 4)  Margarine
 * 5)   Cheese (Level 3)
 * 6)  Blue cheese
 * 7)  Cheddar cheese
 * 8)  Mozzarella
 * 9)  Parmigiano-Reggiano
 * 10)  Ice cream
 * 11)  Soy milk
 * 12)   Tofu
 * 13)  Yogurt

Grains (4 articles)

 * 1)  Bread (Level 3)
 * 2)  Flatbread
 * 3)  Cereal (Level 3)
 * 4)  Flour

Meat and other animal products (17 articles)

 * 1)  Egg as food
 * 2)  Honey
 * 3)  Lard
 * 4)  Meat (Level 3)
 * 5)  Beef
 * 6)  Chicken as food
 * 7)  Hamburger
 * 8)  Lamb and mutton
 * 9)  Pork
 * 10)  Bacon
 * 11)  Ham
 * 12)  Poultry
 * 13)  Sausage
 * 14)  Veal
 * 15)  Offal
 * 16)  Seafood
 * 17)  Fish as food

Categories (4 articles)

 * 1)  Condiment
 * 2)  Herb
 * 3)  Sauce
 * 4)  Spice (Level 3)

Specific (8 articles)

 * 1)  Chutney
 * 2)  Fruit preserves
 * 3)   Ketchup
 * 4)  Mayonnaise
 * 5)  Mustard
 * 6)  Salt (Level 3)
 * 7)  Soy sauce
 * 8)  Vinegar

Food types (19 articles)

 * 1)  Biscuit
 * 2)  Breakfast cereal
 * 3)  Cake
 * 4)  Candy
 * 5)  Casserole
 * 6)   Chocolate
 * 7)  Curry
 * 8)  Dumpling
 * 9)  Noodle
 * 10)   Pasta
 * 11)  Pastry
 * 12)  Pie
 * 13)  Pizza
 * 14)  Porridge
 * 15)  Salad
 * 16)  Sandwich
 * 17)  Soup
 * 18)  Stew
 * 19)  Sushi

Cold drinks (4 articles)

 * 1)  Drinking water (Level 3)
 * 2)  Juice
 * 3)  Soft drink
 * 4)    Coca-Cola

Hot drinks (3 articles)

 * 1)   Coffee (Level 3)
 * 2)  Hot chocolate
 * 3)   Tea (Level 3)

Alcoholic drinks (13 articles)

 * 1)  Alcoholic drink
 * 2)   Beer (Level 3)
 * 3)  Brandy
 * 4)  Cider
 * 5)  Cocktail
 * 6)  Distilled beverage
 * 7)  Gin
 * 8)  Liqueur
 * 9)  Rum
 * 10)  Sake
 * 11)  Vodka
 * 12)  Whisky
 * 13)  Wine (Level 3)

Family and kinship (52 articles)

 * 1)  Kinship
 * 2)  Family (Level 2)
 * 3)  Household
 * 4)  Nuclear family
 * 5)  Extended family
 * 6)  Stepfamily
 * 7)  Clan
 * 8)  Concubinage
 * 9)  Consanguinity
 * 10)  Godparent
 * 11)  Lineage
 * 12)  Matrilineality
 * 13)  Patrilineality
 * 14)  Orphan
 * 15)  Pet

Family members (9 articles)

 * 1)  Grandparent
 * 2)  Cousin
 * 3)  Husband
 * 4)  Parent
 * 5)  Father
 * 6)  Mother
 * 7)  Sibling
 * 8)  Twin
 * 9)  Wife

Familial relation and their establishment (28 articles)

 * 1)  Adoption
 * 2)  Affinity
 * 3)  Bigamy
 * 4)  Breakup
 * 5)  Childbirth
 * 6)  Courtship
 * 7)  Dating
 * 8)  Disownment
 * 9)  Divorce
 * 10)  Endogamy
 * 11)  Exogamy
 * 12)  Family planning
 * 13)  House society
 * 14)  Infidelity
 * 15)  Interpersonal relationship
 * 16)  Cohabitation
 * 17)  Friendship
 * 18)  Intimate relationship
 * 19)  Same-sex relationship
 * 20)  Marriage (Level 3)
 * 21)  Arranged marriage
 * 22)  Civil union
 * 23)  Moiety
 * 24)  Monogamy
 * 25)  Parenting (Level 3)
 * 26)  Polygamy
 * 27)  Romance
 * 28)  Wedding

Household items (19 articles)
For appliances, see Household appliances

Furniture and interior design (11 articles)

 * 1)  Furniture (Level 3)
 * 2)  Bathtub
 * 3)  Bed
 * 4)  Cabinetry
 * 5)  Carpet
 * 6)  Chair
 * 7)  Couch
 * 8)  Fireplace
 * 9)  Pillow
 * 10)  Shower
 * 11)  Table

Cooking and eating (8 articles)

 * 1)  Chopsticks
 * 2)  Cookware and bakeware
 * 3)  Cutlery
 * 4)  Fork
 * 5)  Spoon
 * 6)  Tableware
 * 7)  Cup
 * 8)  Plate

Sexuality and gender (30 articles)

 * 1)  Human sexuality (Level 2)
 * 2)   Gender (Level 3)
 * 3)  Man (Level 3)
 * 4)  Woman (Level 3)
 * 5)  Transgender
 * 6)  Sexual orientation (Level 3)
 * 7)  Heterosexuality
 * 8)   Homosexuality
 * 9)  Bisexuality
 * 10)  Asexuality
 * 11)  Birth control (Level 3)
 * 12)  Combined oral contraceptive pill
 * 13)  Condom
 * 14)  Sexual intercourse
 * 15)  Foreplay
 * 16)  Kiss
 * 17)  Orgasm
 * 18)  Oral sex
 * 19)  Anal sex
 * 20)  Safe sex
 * 21)  Age of consent
 * 22)  Fertility
 * 23)  Incest
 * 24)  Masturbation
 * 25)  Pornography
 * 26)  Promiscuity
 * 27)   Prostitution
 * 28)  Sexual attraction
 * 29)  Sexual fetishism
 * 30)  Virginity

Stages of life (11 articles)

 * 1)  Childhood
 * 2)  Child (Level 3)
 * 3)  Boy
 * 4)  Girl
 * 5)  Infant (Level 3)
 * 6)  Preadolescence
 * 7)  Adolescence
 * 8)  Adult (Level 3)
 * 9)  Young adult
 * 10)  Middle age
 * 11)  Old age

Entertainment (70 articles)
Media-based entertainment are in other categories: Literature (books, plays), Performing arts (theater, ballet etc.), Mass Media (television), and Visual arts (movies and comics).

Basics (19 articles)

 * 1)  Entertainment (Level 2)
 * 2)  Recreation (Level 3)
 * 3)  Amusement park
 * 4)   Aquarium
 * 5)  Camping
 * 6)  Collecting
 * 7)  Hiking
 * 8)  Karaoke
 * 9)  Leisure
 * 10)  Party
 * 11)  Play (activity)
 * 12)  Playground
 * 13)  Puzzle
 * 14)  Crossword
 * 15)  Jigsaw puzzle
 * 16)  Maze
 * 17)  Riddle
 * 18)  Quiz
 * 19)  Zoo

Toys (12 articles)

 * 1)  Toy (Level 3)
 * 2)  Action figure
 * 3)  Doll
 * 4)  Barbie
 * 5)  Frisbee
 * 6)  Kite
 * 7)   Lego
 * 8)  Marble (toy)
 * 9)   Rubik's Cube
 * 10)  Scale model
 * 11)  Teddy bear
 * 12)  Yo-yo

Games (39 articles)

 * 1)  Game (Level 3)
 * 2)  Board game (Level 3)
 * 3)   Backgammon
 * 4)  Chaturanga
 * 5)  Chess
 * 6)  Draughts
 * 7)    Go
 * 8)  Mancala
 * 9)   Monopoly
 * 10)  Pachisi
 * 11)  Scrabble
 * 12)  Shogi
 * 13)   Xiangqi
 * 14)  Card game (Level 3)
 * 15)  Playing card
 * 16)  Tarot
 * 17)   Blackjack
 * 18)  Contract bridge
 * 19)    Poker
 * 20)  Gambling (Level 3)
 * 21)  Casino
 * 22)   Dice
 * 23)  Lottery
 * 24)  Roulette
 * 25)  Slot machine
 * 26)   Video game (Level 3)
 * 27)  Video game console
 * 28)   Pokémon
 * 29)  Pong
 * 30)  Tetris
 * 31)  Arcade game
 * 32)  Darts
 * 33)  Dominoes
 * 34)  Hide-and-seek
 * 35)  Hopscotch
 * 36)  Mahjong
 * 37)  Pinball
 * 38)  Tag
 * 39)  Wargaming

Basics (12 articles)

 * 1)  Sport (Level 3)
 * 2)  Doping in sport
 * 3)  Extreme sport
 * 4)  Sports equipment
 * 5)  Asian Games
 * 6)  Ball
 * 7)  Stadium
 * 8)  Olympic Games (Level 3)
 * 9)  Ancient Olympic Games
 * 10)  Paralympic Games
 * 11)   Summer Olympic Games
 * 12)  Winter Olympic Games

Team sports (35 articles)

 * 1)  American football
 * 2)  National Football League
 * 3)   Super Bowl
 * 4)  Association football (Level 3)
 * 5)  FIFA World Cup
 * 6)  La Liga
 * 7)  Premier League
 * 8)  UEFA Champions League
 * 9)  Australian rules football
 * 10)  Bandy
 * 11)  Baseball
 * 12)  Major League Baseball
 * 13)  Basketball
 * 14)  National Basketball Association
 * 15)  Basque pelota
 * 16)   Cricket
 * 17)  Cricket World Cup
 * 18)  Curling
 * 19)  Field hockey
 * 20)  Handball
 * 21)  Ice hockey
 * 22)   National Hockey League
 * 23)  Kabaddi
 * 24)  Lacrosse
 * 25)  Netball
 * 26)  Polo
 * 27)  Rugby football
 * 28)  Rugby league
 * 29)  Rugby sevens
 * 30)  Rugby union
 * 31)  Rugby World Cup
 * 32)  Sepak takraw
 * 33)  Softball
 * 34)  Volleyball
 * 35)  Beach volleyball

Athletics (14 articles)

 * 1)  Athletics (Level 3)
 * 2)  Running
 * 3)  Track and field
 * 4)  100 metres
 * 5)  Decathlon
 * 6)  Discus throw
 * 7)  High jump
 * 8)  Hurdling
 * 9)  Javelin throw
 * 10)  Long jump
 * 11)  Marathon
 * 12)  Pole vault
 * 13)  Shot put
 * 14)  Walking

Skating (5 articles)

 * 1)  Ice skating
 * 2)  Figure skating
 * 3)  Speed skating
 * 4)  Roller skating
 * 5)  Skateboarding

Water sports (9 articles)

 * 1)  Canoeing
 * 2)  Diving
 * 3)   Rowing
 * 4)  Sailing (sport)
 * 5)  Underwater diving
 * 6)  Scuba diving
 * 7)  Swimming
 * 8)  Swimming pool
 * 9)  Water polo

Other individual sports (44 articles)

 * 1)  Angling
 * 2)  Archery
 * 3)  Auto racing
 * 4)   Formula One
 * 5)  NASCAR
 * 6)   Badminton
 * 7)  Bowling
 * 8)  Bocce
 * 9)  Bowls
 * 10)  Bodybuilding
 * 11)   Bullfighting
 * 12)  Cue sports
 * 13)  Snooker
 * 14)  Cycle sport
 * 15)  Mountain bike
 * 16)   Tour de France
 * 17)  Equestrianism
 * 18)  Horse racing
 * 19)  Saddle
 * 20)  Stirrup
 * 21)  Fencing
 * 22)  Gladiator
 * 23)  Golf
 * 24)  Gymnastics
 * 25)  Mountaineering
 * 26)  Orienteering
 * 27)  Rock climbing
 * 28)  Rodeo
 * 29)  Shooting sport
 * 30)  Biathlon
 * 31)  Skiing
 * 32)  Alpine skiing
 * 33)  Cross-country skiing
 * 34)  Ski jumping
 * 35)  Slalom skiing
 * 36)  Sled
 * 37)  Bobsleigh
 * 38)  Luge
 * 39)  Snowboarding
 * 40)  Squash
 * 41)  Surfing
 * 42)  Table tennis
 * 43)  Tennis
 * 44)  Olympic weightlifting

Combat sport and martial arts (12 articles)

 * 1)  Martial arts
 * 2)  Boxing
 * 3)  Judo
 * 4)  Karate
 * 5)  Kickboxing
 * 6)  Mixed martial arts
 * 7)  Taekwondo
 * 8)  Wrestling
 * 9)  Freestyle wrestling
 * 10)  Greco-Roman wrestling
 * 11)   Sumo
 * 12)  Wushu

=Society and social sciences (916 articles)=

Basics (6 articles)

 * 1)  Communication (Level 2)
 * 2)  Social science (Level 3)
 * 3)  Humanities
 * 4)  Information
 * 5)  Nonverbal communication
 * 6)  Meme

Anthropology (4 articles)

 * 1)  Anthropology (Level 3)
 * 2)  Biological anthropology
 * 3)  Linguistic anthropology
 * 4)  People

Money (11 articles)

 * 1)  Money (Level 2)
 * 2)  Currency (Level 3)
 * 3)  Banknote
 * 4)  Coin
 * 5)  Exchange rate

Specific currencies (6 articles)

 * 1)   Euro
 * 2)  Japanese yen
 * 3)  Pound sterling
 * 4)  Renminbi
 * 5)  Rupee
 * 6)  United States dollar

Basic business and economics (82 articles)

 * 1)  Accounting
 * 2)  Bank (Level 3)
 * 3)  Bankruptcy
 * 4)  Business (Level 2)
 * 5)  Capital
 * 6)  Cheque
 * 7)  Company
 * 8)  Corporation (Level 3)
 * 9)  Multinational corporation
 * 10)  Debit card
 * 11)  Debt
 * 12)  Credit card
 * 13)  Loan
 * 14)  E-commerce
 * 15)   Economics (Level 3)
 * 16)  Econometrics
 * 17)  Economic growth
 * 18)  Economy
 * 19)  Economy of China
 * 20)  Economy of the European Union
 * 21)  Economy of the United States
 * 22)  Goods
 * 23)  Gross domestic product
 * 24)  Interest
 * 25)   Labour economics
 * 26)  Macroeconomics (Level 3)
 * 27)  Microeconomics (Level 3)
 * 28)  Service
 * 29)  Subsidy
 * 30)   Supply and demand (Level 3)
 * 31)  Finance (Level 3)
 * 32)  Industry (Level 2)
 * 33)   Agriculture (Level 2)
 * 34)  Construction (Level 2)
 * 35)  Energy industry
 * 36)  Fishing industry (Level 3)
 * 37)  Forestry
 * 38)  Fur trade
 * 39)  Hunting (Level 3)
 * 40)  Fishing
 * 41)  Whaling
 * 42)  Manufacturing (Level 2)
 * 43)  Aerospace manufacturer
 * 44)  Automotive industry
 * 45)  Chemical industry
 * 46)  Textile manufacturing
 * 47)  Mining (Level 3)
 * 48)  Tourism (Level 3)
 * 49)  Hotel
 * 50)  Inflation
 * 51)  Deflation
 * 52)  Insurance
 * 53)  Investment
 * 54)  Derivative (finance)
 * 55)  Real estate
 * 56)  Stock
 * 57)  Stock exchange
 * 58)  New York Stock Exchange
 * 59)  Logistics
 * 60)  Management (Level 3)
 * 61)  Market
 * 62)  Black market
 * 63)  Market failure
 * 64)  Marketing
 * 65)  Brand
 * 66)  Retail (Level 3)
 * 67)  Shopping mall
 * 68)  Supermarket
 * 69)  Sales
 * 70)  Monopoly
 * 71)  Mortgage loan
 * 72)  Partnership
 * 73)  Pension
 * 74)  Perfect competition
 * 75)  Productivity
 * 76)  Property (Level 3)
 * 77)  Tax (Level 3)
 * 78)  Income tax
 * 79)  Property tax
 * 80)  Sales tax
 * 81)  Tariff
 * 82)  Trade (Level 3)
 * 83)  International trade

Employment (8 articles)

 * 1)  Career
 * 2)  Domestic worker
 * 3)  Employment (Level 2)
 * 4)  Job
 * 5)  Layoff
 * 6)  Retirement
 * 7)  Unemployment
 * 8)  Wage

Companies (16 articles)
For media companies, see under Mass media
 * 1)  Alibaba Group
 * 2)  Amazon.com
 * 3)   Apple Inc.
 * 4)  General Electric
 * 5)  IBM
 * 6)  McDonald's
 * 7)   Microsoft
 * 8)  Samsung
 * 9)  Standard Oil
 * 10)   Walmart
 * 11)  The Walt Disney Company

Car companies (5 articles)

 * 1)  Ford Motor Company
 * 2)  General Motors
 * 3)  Nissan
 * 4)  Toyota
 * 5)  Volkswagen

Basics (15 articles)

 * 1)   Culture (Level 1)
 * 2)  Popular culture (Level 2)
 * 3)  Cultural assimilation
 * 4)  Tradition
 * 5)  Oral tradition
 * 6)  Greeting
 * 7)  Body modification
 * 8)  Body piercing
 * 9)  Circumcision
 * 10)  Tattoo
 * 11)   Flag
 * 12)  Hunter-gatherer
 * 13)  Nomad
 * 14)  Taboo
 * 15)  Cannibalism in humans

Festivals, holidays, and observances (21 articles)

 * 1)  Birthday
 * 2)  Festival
 * 3)  Carnival
 * 4)  Harvest festival
 * 5)  Holi
 * 6)  Diwali
 * 7)  World's fair
 * 8)  Holiday
 * 9)   Christmas
 * 10)  Easter
 * 11)  Pentecost
 * 12)   Halloween
 * 13)  New Year's Day
 * 14)   Chinese New Year
 * 15)  Nowruz
 * 16)  Passover
 * 17)  Rosh Hashanah
 * 18)  Yom Kippur
 * 19)  Ramadan
 * 20)  Eid al-Fitr
 * 21)  Sabbath

Education (67 articles)

 * 1)  Education (Level 2)
 * 2)  Early childhood education
 * 3)  Primary education
 * 4)  Secondary education
 * 5)   Academy
 * 6)  College
 * 7)  Curriculum
 * 8)  Learning (Level 3)
 * 9)  Library (Level 3)
 * 10)  School (Level 3)
 * 11)  Boarding school
 * 12)  Teacher
 * 13)  Test
 * 14)  University

Africa (1 article)

 * 1)  Library of Alexandria

Americas (2 articles)

 * 1)  Library of Congress
 * 2)  New York Public Library

Asia (2 articles)

 * 1)  National Library of China
 * 2)  National Diet Library

Europe (5 articles)

 * 1)  Vatican Library
 * 2)  British Library
 * 3)  Russian State Library
 * 4)  National Library of Russia
 * 5)  Bibliothèque nationale de France

Africa (2 articles)

 * 1)  University of Al Quaraouiyine
 * 2)  Al-Azhar University

Americas (14 articles)
US (12 articles) Ivy League (5 articles)
 * 1)  National Autonomous University of Mexico
 * 2)  University of Toronto
 * 1)  University of Chicago
 * 2)  California Institute of Technology
 * 3)  Johns Hopkins University
 * 4)  Massachusetts Institute of Technology
 * 5)  Stanford University
 * 6)   University of Virginia
 * 7)  University of California, Berkeley
 * 1)  Ivy League
 * 2)  Harvard University
 * 3)  Yale University
 * 4)   Princeton University
 * 5)  Columbia University

Asia (6 articles)
China (3 articles)
 * 1)  Kyoto University
 * 2)  University of Tokyo
 * 3)   Indian Institutes of Technology
 * 1)  University of Hong Kong
 * 2)  Peking University
 * 3)  Tsinghua University

Europe (21 articles)
France (3 articles) Germany (4 articles) UK (3 articles) Eastern Europe (3 articles)
 * 1)  University of Bologna
 * 2)  University of Copenhagen
 * 3)  Complutense University of Madrid
 * 4)  University of Vienna
 * 5)  Leiden University
 * 6)  Sapienza University of Rome
 * 7)  University of Salamanca
 * 8)  ETH Zurich
 * 1)  École Normale Supérieure
 * 2)  University of Paris
 * 3)  Pierre and Marie Curie University
 * 1)  Ludwig Maximilian University of Munich
 * 2)  Humboldt University of Berlin
 * 3)  University of Göttingen
 * 4)  Heidelberg University
 * 1)   University of Cambridge
 * 2)  University of Oxford
 * 3)  University of London
 * 1)  Charles University in Prague
 * 2)  Jagiellonian University
 * 3)  Moscow State University

Ethnology (38 articles)

 * 1)  Ethnology
 * 2)  Diaspora
 * 3)  Ethnocentrism
 * 4)  Ethnography
 * 5)  Indigenous peoples (Level 3)
 * 6)  Self-determination

Ethnic groups (32 articles)

 * 1)  Aboriginal Australians
 * 2)  Adivasi
 * 3)  Arabs
 * 4)  Austronesian peoples
 * 5)  Bantu peoples
 * 6)  Basques
 * 7)  Bedouin
 * 8)   Berbers
 * 9)  Congo Pygmies
 * 10)  Han Chinese
 * 11)  Hmong people
 * 12)  Indigenous peoples of the Americas
 * 13)  Cherokee
 * 14)  Inuit
 * 15)  Iroquois
 * 16)  Maya peoples
 * 17)  Navajo
 * 18)  Quechua people
 * 19)  Sioux
 * 20)   Jews
 * 21)  Kurds
 * 22)  Maasai people
 * 23)  Māori people
 * 24)  Proto-Indo-Europeans
 * 25)  Romani people
 * 26)  Sami people
 * 27)  San people
 * 28)  Slavs
 * 29)  Tibetan people
 * 30)  Uyghurs
 * 31)  Yoruba people
 * 32)  Zulu people

International organizations (30 articles)

 * 1)  African Union
 * 2)  Arab League
 * 3)   Association of Southeast Asian Nations
 * 4)  Commonwealth of Independent States
 * 5)   Commonwealth of Nations
 * 6)  Council of Europe
 * 7)    European Union (Level 3)
 * 8)  G20
 * 9)   International Red Cross and Red Crescent Movement (Level 3)
 * 10)  Interpol
 * 11)  League of Nations
 * 12)  NATO (Level 3)
 * 13)  Nobel Prize
 * 14)  OPEC
 * 15)  Organisation for Economic Co-operation and Development
 * 16)  Organization for Security and Co-operation in Europe
 * 17)  Organization of American States
 * 18)  Scouting
 * 19)  Union of South American Nations
 * 20)  United Nations (Level 3)
 * 21)  International Atomic Energy Agency
 * 22)  International Court of Justice
 * 23)   International Criminal Court
 * 24)  International Monetary Fund (Level 3)
 * 25)  UNESCO
 * 26)  UNICEF
 * 27)  World Bank Group
 * 28)  World Health Organization (Level 3)
 * 29)  World Trade Organization (Level 3)
 * 30)  Warsaw Pact

Basics (55 articles)

 * 1)  Language (Level 1)
 * 2)  Origin of language
 * 3)  Grammar (Level 3)
 * 4)  Syntax
 * 5)  Sentence
 * 6)  Noun
 * 7)  Name
 * 8)  Personal name (Level 3)
 * 9)  Surname
 * 10)  Verb
 * 11)  Adjective
 * 12)  Adverb
 * 13)  Pronoun
 * 14)  Preposition and postposition
 * 15)  Conjunction
 * 16)  Interjection
 * 17)  Linguistics (Level 3)
 * 18)  Comparative linguistics
 * 19)  Historical linguistics
 * 20)  Etymology
 * 21)  Linguistic typology
 * 22)  Literacy
 * 23)  Reading
 * 24)  Morphology
 * 25)  Morpheme
 * 26)  Phonetics
 * 27)  Consonant
 * 28)  International Phonetic Alphabet
 * 29)  Prosody
 * 30)   Vowel
 * 31)  Phonology
 * 32)  Phoneme
 * 33)  Syllable
 * 34)  Rhetoric
 * 35)  Semantics
 * 36)  Euphemism
 * 37)  Profanity
 * 38)  Semiotics
 * 39)  Symbol
 * 40)  Sociolinguistics
 * 41)  Accent
 * 42)  Dialect
 * 43)  Diglossia
 * 44)  Endangered language
 * 45)  Language death
 * 46)  Multilingualism
 * 47)  Slang
 * 48)  Speech (Level 3)
 * 49)  Translation
 * 50)  Word (Level 3)
 * 51)  Writing (Level 2)
 * 52)   Alphabet (Level 3)
 * 53)  Letter
 * 54)  Orthography
 * 55)  Writing system

Language families (28 articles)

 * 1)  Language family
 * 2)  Afroasiatic languages
 * 3)  Semitic languages
 * 4)  Algic languages
 * 5)  Austroasiatic languages
 * 6)  Austronesian languages
 * 7)  Creole language
 * 8)  Dravidian languages
 * 9)  Eskimo–Aleut languages
 * 10)  Indo-European languages (Level 3)
 * 11)  Indo-Aryan languages
 * 12)  Romance languages
 * 13)  Germanic languages
 * 14)  Iranian languages
 * 15)  Slavic languages
 * 16)  Kartvelian languages
 * 17)  Khoisan languages
 * 18)  Niger–Congo languages
 * 19)  Bantu languages
 * 20)  Nilo-Saharan languages
 * 21)  North Caucasian languages
 * 22)  Sign language
 * 23)  Sino-Tibetan languages
 * 24)  Tai–Kadai languages
 * 25)  Trans–New Guinea languages
 * 26)  Turkic languages
 * 27)  Uralic languages
 * 28)  Uto-Aztecan languages

Alphabets and writing systems (17 articles)

 * 1)  Braille
 * 2)  Arabic alphabet (Level 3)
 * 3)  Brahmic scripts (Level 3)
 * 4)  Chinese characters (Level 3)
 * 5)  Cuneiform script
 * 6)  Cyrillic script (Level 3)
 * 7)  Devanagari
 * 8)  Egyptian hieroglyphs
 * 9)  Greek alphabet (Level 3)
 * 10)  Hangul
 * 11)  Japanese writing system
 * 12)  Latin script (Level 3)
 * 13)  Maya script
 * 14)  Morse code
 * 15)  Phoenician alphabet
 * 16)  Rosetta Stone
 * 17)  Runes

Specific languages (88 articles)

 * 1)   Esperanto
 * 2)  Japanese language (Level 3)
 * 3)  Hungarian language
 * 4)  Korean language
 * 5)  Quechuan languages
 * 6)  Sumerian language
 * 7)  Thai language

Afroasiatic languages (12 articles)

 * 1)  Akkadian
 * 2)  Amharic
 * 3)  Arabic (Level 3)
 * 4)  Classical Arabic
 * 5)  Egyptian Arabic
 * 6)   Aramaic language
 * 7)   Berber languages
 * 8)  Egyptian language
 * 9)   Hebrew language
 * 10)  Hausa language
 * 11)  Oromo language
 * 12)  Somali language

Austronesian languages (7 articles)

 * 1)  Cebuano language
 * 2)  Indonesian language
 * 3)  Javanese language
 * 4)  Malagasy language
 * 5)  Malay language
 * 6)  Sundanese language
 * 7)  Tagalog language

Austro-Asiatic languages (2 articles)

 * 1)  Khmer language
 * 2)  Vietnamese language

Indo-European languages (40 articles)
Indo-Aryan languages (14 articles) Romance languages (6 articles) Germanic languages (8 articles) Iranian languages (3 articles) Slavic languages (6 articles)
 * 1)  Armenian language
 * 2)  Greek language (Level 3)
 * 3)  Ancient Greek
 * 1)  Assamese language
 * 2)    Bengali language (Level 3)
 * 3)  Hindustani language (Level 3)
 * 4)  Hindi
 * 5)  Urdu
 * 6)  Marathi language
 * 7)  Nepali language
 * 8)  Odia language
 * 9)  Pali
 * 10)   Sanskrit
 * 11)  Sindhi language
 * 12)  Sinhalese language
 * 13)  Punjabi language
 * 14)  Gujarati language
 * 1)  French language (Level 3)
 * 2)  Italian language
 * 3)   Latin (Level 3)
 * 4)   Portuguese language (Level 3)
 * 5)  Romanian language
 * 6)  Spanish language (Level 3)
 * 1)  Danish language
 * 2)  Dutch language
 * 3)  English language (Level 3)
 * 4)  Middle English
 * 5)   Old English
 * 6)   German language (Level 3)
 * 7)  Swedish language
 * 8)  Yiddish
 * 1)  Kurdish languages
 * 2)  Pashto
 * 3)  Persian language
 * 1)  Czech language
 * 2)  Old Church Slavonic
 * 3)  Polish language
 * 4)   Russian language (Level 3)
 * 5)  Serbo-Croatian
 * 6)  Ukrainian language

Dravidian languages (4 articles)

 * 1)  Kannada
 * 2)  Malayalam
 * 3)  Tamil language
 * 4)  Telugu language

Niger–Congo languages (4 articles)

 * 1)  Fula language
 * 2)  Igbo language
 * 3)  Swahili language
 * 4)  Yoruba language

Sino-Tibetan languages (8 articles)

 * 1)  Burmese language
 * 2)  Chinese language (Level 3)
 * 3)  Classical Chinese
 * 4)  Hakka Chinese
 * 5)   Mandarin Chinese
 * 6)  Wu Chinese
 * 7)  Yue Chinese
 * 8)  Min Chinese

Turkic languages (4 articles)

 * 1)  Azerbaijani language
 * 2)  Kazakh language
 * 3)   Turkish language
 * 4)  Uzbek language

Law (81 articles)
For legal history see History of other topics

Basics (24 articles)

 * 1)   Law (Level 2)
 * 2)  Alternative dispute resolution
 * 3)  Appeal
 * 4)  Capital punishment
 * 5)  Constitution (Level 3)
 * 6)  Contract
 * 7)  Damages
 * 8)  Equity
 * 9)  Evidence
 * 10)  Freedom of speech
 * 11)  Impartiality
 * 12)  Injunction
 * 13)  Jurisprudence
 * 14)  Statutory interpretation
 * 15)  Justice (Level 3)
 * 16)  Lawsuit
 * 17)   Negligence
 * 18)  Presumption of innocence
 * 19)  Rights
 * 20)  Civil and political rights
 * 21)  Suffrage
 * 22)  Tort
 * 23)  Trial
 * 24)  Witness

Subjects (16 articles)

 * 1)  Administrative law
 * 2)  Civil law
 * 3)  Common law
 * 4)  Criminal law
 * 5)  Criminal procedure
 * 6)  Custom
 * 7)  Intellectual property
 * 8)   Copyright
 * 9)  Patent
 * 10)  International law
 * 11)  Precedent
 * 12)  Property law
 * 13)  Will and testament
 * 14)  Religious law
 * 15)  Statutory law
 * 16)  Trust law

Institutions and professions (8 articles)

 * 1)  Court
 * 2)  Judge
 * 3)  Judiciary
 * 4)  Rule of law
 * 5)  Jury
 * 6)  Lawyer
 * 7)  Police (Level 3)
 * 8)  Security

Crime (21 articles)

 * 1)   Crime (Level 2)
 * 2)  Assault
 * 3)  Battery (crime)
 * 4)  Forensic science
 * 5)  Fraud
 * 6)  Genocide
 * 7)  Homicide
 * 8)  Murder
 * 9)  Human trafficking
 * 10)  Illegal drug trade
 * 11)  Kidnapping
 * 12)  Organized crime
 * 13)  Piracy
 * 14)  Robbery
 * 15)  Sexual assault
 * 16)  Rape
 * 17)  Smuggling
 * 18)  Theft
 * 19)  Torture
 * 20)  Violence
 * 21)  Domestic violence

Specific documents (12 articles)

 * 1)  Code of Hammurabi
 * 2)  Corpus Juris Civilis
 * 3)  Declaration of the Rights of Man and of the Citizen
 * 4)  Geneva Conventions
 * 5)  International Covenant on Civil and Political Rights
 * 6)  International Covenant on Economic, Social and Cultural Rights
 * 7)  Magna Carta
 * 8)  Napoleonic Code
 * 9)  Nuremberg principles
 * 10)   United States Constitution
 * 11)  United States Declaration of Independence
 * 12)  Universal Declaration of Human Rights

Mass media (54 articles)
For technology of mass communication, television, radio, etc.) see technology section


 * 1)  Advertising (Level 3)
 * 2)  Cartoon
 * 3)  Censorship
 * 4)  Journalism (Level 3)
 * 5)  Mass media (Level 3)
 * 6)  News (Level 3)
 * 7)   Propaganda
 * 8)  Public relations
 * 9)  Publishing (Level 3)
 * 10)   Western (genre)

Magazines (13 articles)

 * 1)  Magazine
 * 2)  Life
 * 3)  Mad
 * 4)  National Geographic
 * 5)  The New Yorker
 * 6)  Playboy
 * 7)  Punch
 * 8)  Reader's Digest
 * 9)  Rolling Stone
 * 10)  Scientific American
 * 11)  Der Spiegel
 * 12)  Time
 * 13)  Vogue

Newspapers (6 articles)

 * 1)  Newspaper (Level 3)
 * 2)  The Times
 * 3)  The New York Times
 * 4)   The Wall Street Journal
 * 5)  The Washington Post
 * 6)  Le Monde

Radio (2 articles)

 * 1)  The Goon Show
 * 2)  The Hitchhiker's Guide to the Galaxy

Television (19 articles)

 * 1)  Documentary film
 * 2)  Emmy Award
 * 3)  Game show
 * 4)  Sitcom
 * 5)  Soap opera
 * 6)  Television in the United States
 * 7)  Television program
 * 8)  60 Minutes
 * 9)   Doctor Who
 * 10)  I Love Lucy
 * 11)  Looney Tunes
 * 12)  Meet the Press
 * 13)  Roots
 * 14)  Sesame Street
 * 15)  The Simpsons
 * 16)   Star Trek
 * 17)  The Tonight Show
 * 18)  Television network
 * 19)   BBC

Websites (4 articles)

 * 1)   Facebook
 * 2)   Google
 * 3)  YouTube
 * 4)    Wikipedia

Politics (17 articles)

 * 1)   Politics (Level 2)
 * 2)  Political science (Level 3)
 * 3)   Diplomacy (Level 3)
 * 4)  Diplomatic mission
 * 5)  International relations
 * 6)  Imperialism (Level 3)
 * 7)  Colonialism (Level 3)
 * 8)   Globalization (Level 3)
 * 9)  Civics
 * 10)  Citizenship
 * 11)  Civil liberties
 * 12)  Election
 * 13)  Political party
 * 14)  Referendum
 * 15)  Opinion poll
 * 16)  Revolution
 * 17)  Riot

Forms of government (9 articles)

 * 1)  Forms of government (Level 2)
 * 2)  Democracy (Level 3)
 * 3)  Dictatorship (Level 3)
 * 4)  Monarchy (Level 3)
 * 5)  Absolute monarchy
 * 6)  Constitutional monarchy
 * 7)  Theocracy (Level 3)
 * 8)  Oligarchy
 * 9)  Republic

State structure and administration (19 articles)

 * 1)  State (Level 3)
 * 2)  City-state
 * 3)  Nation state
 * 4)  Unitary state
 * 5)  Federation
 * 6)  Confederation
 * 7)  Empire
 * 8)  Welfare state
 * 9)  Welfare
 * 10)  Sovereignty
 * 11)  Decentralization
 * 12)  Executive
 * 13)  Head of state
 * 14)  Legislature
 * 15)  Parliament
 * 16)  Public policy
 * 17)  Public administration
 * 18)  Civil service
 * 19)  Separation of powers

Ideology and political theory (23 articles)

 * 1)  Ideology (Level 3)
 * 2)  Political spectrum
 * 3)  Anarchism (Level 3)
 * 4)   Capitalism (Level 3)
 * 5)  Socialism (Level 3)
 * 6)  Communism (Level 3)
 * 7)  Marxism
 * 8)  Leninism
 * 9)  Fascism (Level 3)
 * 10)  Nazism
 * 11)  Liberalism (Level 3)
 * 12)   Libertarianism
 * 13)  Conservatism (Level 3)
 * 14)  Nationalism (Level 3)
 * 15)  Patriotism
 * 16)   Zionism
 * 17)  Cosmopolitanism
 * 18)  Totalitarianism
 * 19)  Christian democracy
 * 20)  Social democracy
 * 21)  Green politics
 * 22)  Multiculturalism
 * 23)  Islamism

Psychology (79 articles)
For psychological disorders see Mental disorders

Basics (8 articles)

 * 1)  Psychology (Level 2)
 * 2)   Clinical psychology
 * 3)  Cognitive psychology
 * 4)  Developmental psychology
 * 5)  Evolutionary psychology
 * 6)  Personality psychology
 * 7)  Psychology of religion
 * 8)   Psychotherapy

Psychology schools (5 articles)

 * 1)  Analytical psychology
 * 2)  Behaviorism
 * 3)  Gestalt psychology
 * 4)  Humanistic psychology
 * 5)  Psychoanalysis

Concepts (21 articles)

 * 1)  Amnesia
 * 2)  Attention
 * 3)  Cognition
 * 4)  Cognitive development
 * 5)  Confirmation bias
 * 6)  Consciousness (Level 3)
 * 7)  Creativity
 * 8)  Dream (Level 3)
 * 9)  Human behavior (Level 3)
 * 10)  Human intelligence
 * 11)  Hypnosis
 * 12)  Introspection
 * 13)  Memory (Level 3)
 * 14)  Mind (Level 2)
 * 15)  Mood
 * 16)  Motivation
 * 17)  Oedipus complex
 * 18)  Perception
 * 19)  Personality (Level 3)
 * 20)  Stereotype
 * 21)  Thought (Level 3)

Emotions and traits (28 articles)

 * 1)  Emotion (Level 2)
 * 2)  Agreeableness
 * 3)   Anger (Level 3)
 * 4)  Anxiety
 * 5)  Conscientiousness
 * 6)  Courage
 * 7)  Curiosity
 * 8)  Dignity
 * 9)  Disgust
 * 10)  Doubt
 * 11)  Extraversion and introversion
 * 12)  Fear (Level 3)
 * 13)  Guilt (emotion)
 * 14)  Happiness (Level 3)
 * 15)  Hatred
 * 16)  Hope
 * 17)  Humour (Level 3)
 * 18)  Jealousy
 * 19)  Love (Level 3)
 * 20)  Lust
 * 21)  Neuroticism
 * 22)  Openness to experience
 * 23)  Pleasure
 * 24)  Sadness
 * 25)  Self-esteem
 * 26)  Shame
 * 27)  Surprise
 * 28)  Suffering

Interpersonal relations (17 articles)

 * 1)  Aggression
 * 2)  Altruism
 * 3)  Blame
 * 4)  Bullying
 * 5)  Charisma
 * 6)  Competition
 * 7)  Conformity
 * 8)  Empathy
 * 9)  Forgiveness
 * 10)  Honour
 * 11)  Lie
 * 12)  Privacy (Level 3)
 * 13)  Prejudice
 * 14)  Punishment
 * 15)  Respect
 * 16)  Shyness
 * 17)  Trust

Society (75 articles)

 * 1)  Society (Level 2)
 * 2)  Civil society
 * 3)  Institution
 * 4)  Social order
 * 5)  Solidarity
 * 6)  Public

Groups (12 articles)

 * 1)  Club
 * 2)   Community (Level 2)
 * 3)  Gang
 * 4)  Organization
 * 5)  Non-governmental organization
 * 6)  Nonprofit organization
 * 7)  Trade union
 * 8)  Secret society
 * 9)  Social network
 * 10)  Support group
 * 11)  Tribe
 * 12)  Voluntary association

Services and institutions (6 articles)

 * 1)  Emergency management
 * 2)  Firefighting
 * 3)  Orphanage
 * 4)  Prison
 * 5)  Psychiatric hospital
 * 6)  Social work

Issues (27 articles)

 * 1)  Social issue
 * 2)   Abortion (Level 3)
 * 3)  Animal welfare
 * 4)  Child labour
 * 5)  Corruption
 * 6)  Deforestation
 * 7)  Disability (Level 3)
 * 8)  '''Environmentalism (Level 3)
 * 9)  Euthanasia
 * 10)  Famine (Level 3)
 * 11)  Homelessness
 * 12)  Human migration
 * 13)  Immigration
 * 14)  Human overpopulation
 * 15)  One-child policy
 * 16)  Humanitarianism (Level 3)
 * 17)  Pacifism
 * 18)  Peace (Level 3)
 * 19)  World peace
 * 20)  Pollution (Level 3)
 * 21)  Air pollution
 * 22)  Water pollution
 * 23)  Population ageing
 * 24)  Poverty (Level 3)
 * 25)  Social movement
 * 26)  Suicide (Level 3)
 * 27)  Sustainable development

Social status (24 articles)

 * 1)  Economic inequality
 * 2)  Ethnic group (Level 2)
 * 3)  Feminism (Level 3)
 * 4)  Human rights (Level 3)
 * 5)  Minority group
 * 6)  Political freedom
 * 7)   Race
 * 8)  Social stratification
 * 9)  Slavery (Level 3)

Caste (4 articles)

 * 1)  Caste
 * 2)  Caste system in India
 * 3)  Dalit
 * 4)  Four occupations

Social classes (7 articles)

 * 1)  Social class (Level 3)
 * 2)  Bourgeoisie
 * 3)  Clergy
 * 4)  Eunuch
 * 5)  Middle class
 * 6)  Peasant
 * 7)  Proletariat

Discrimination (4 articles)

 * 1)  Discrimination (Level 3)
 * 2)  Class discrimination
 * 3)  Racism (Level 3)
 * 4)  Sexism (Level 3)

Sociology (20 articles)

 * 1)  Sociology (Level 3)
 * 2)  Criminology
 * 3)  Demography
 * 4)  Census
 * 5)  Etiquette
 * 6)  Nature versus nurture
 * 7)  Peer pressure
 * 8)  Power (social and political)
 * 9)  Social change
 * 10)  Social control
 * 11)  Deviance
 * 12)  Social group
 * 13)  Identity
 * 14)  Social reality
 * 15)  Social research
 * 16)  Social theory
 * 17)  Socialization
 * 18)  Sociological theory
 * 19)  Structure and agency
 * 20)  Subculture

War and military (52 articles)
See also Military technology

Basics (14 articles)

 * 1)  War (Level 2)
 * 2)  Fortification (Level 3)
 * 3)  Castle
 * 4)  Defensive wall
 * 5)  Casualty
 * 6)  Conscription
 * 7)  Desertion
 * 8)  Duel
 * 9)  Law of war
 * 10)  Medal
 * 11)  Militarism
 * 12)   Prisoner of war
 * 13)  Refugee
 * 14)  War crime

Wars by type (5 articles)

 * 1)  Civil war
 * 2)  Ethnic conflict
 * 3)   Invasion
 * 4)  Rebellion
 * 5)  Religious war

Warfare by type (10 articles)

 * 1)  Terrorism (Level 3)
 * 2)  Aerial warfare
 * 3)  Anti-aircraft warfare
 * 4)  Armoured warfare
 * 5)  Espionage
 * 6)  Guerrilla warfare
 * 7)  Naval warfare
 * 8)   Siege
 * 9)  Sniper
 * 10)   Trench warfare

Basics (7 articles)

 * 1)  Military (Level 3)
 * 2)  Military education and training
 * 3)  Military–industrial complex
 * 4)  Military science
 * 5)  Operational level of war
 * 6)  Military strategy
 * 7)  Military tactics

Military forces (8 articles)

 * 1)  Army
 * 2)  Cavalry
 * 3)  Infantry
 * 4)  Militia
 * 5)  Navy
 * 6)  Air force
 * 7)  Soldier
 * 8)  Military reserve

Military operations (3 articles)

 * 1)  Battle
 * 2)  Blockade
 * 3)  Peacekeeping

Military organization (3 articles)

 * 1)  Military organization
 * 2)  Command and control
 * 3)  Staff (military)

Military ranks (2 articles)

 * 1)  Military rank
 * 2)  Officer

=Biology and health sciences (1461 articles)=

Basics (31 articles)

 * 1)  Life (Level 1)
 * 2)  Death (Level 2)
 * 3)  Abiogenesis (Level 3)
 * 4)  Organism (Level 3)
 * 5)  Model organism
 * 6)  Biology (Level 2)
 * 7)  Microbiology
 * 8)  Mycology
 * 9)  Evolution (Level 3)
 * 10)   Natural selection (Level 3)
 * 11)  Adaptation
 * 12)  Genetic drift
 * 13)  Mutation
 * 14)  Genetics (Level 3)
 * 15)   Gene (Level 3)
 * 16)  Genetic code
 * 17)  Gene expression
 * 18)  Heredity (Level 3)
 * 19)  Epigenetics
 * 20)   Human genome
 * 21)  Hybrid
 * 22)  Mendelian inheritance
 * 23)  Neuroscience
 * 24)  Paleontology
 * 25)  Fossil
 * 26)  Phylogenetics
 * 27)  Binomial nomenclature
 * 28)  Taxonomy
 * 29)  Domain
 * 30)  Kingdom
 * 31)  Species (Level 3)

Basic anatomy (4 articles)

 * 1)  Anatomy (Level 3)
 * 2)  Dissection
 * 3)  Organ
 * 4)  Tissue

Animal anatomy and morphology (90 articles)

 * 1)  Endocrine system
 * 2)  Adrenal gland
 * 3)  Thyroid
 * 4)  Immune system (Level 3)
 * 5)  Antibody
 * 6)  Abdomen
 * 7)  Head
 * 8)  Thorax

Circulatory system (10 articles)

 * 1)  Circulatory system (Level 3)
 * 2)  Artery
 * 3)  Blood (Level 3)
 * 4)  Red blood cell
 * 5)  White blood cell
 * 6)  Capillary
 * 7)  Heart (Level 3)
 * 8)  Lymphatic system
 * 9)  Spleen
 * 10)  Vein

Gastrointestinal tract (6 articles)

 * 1)  Mouth
 * 2)  Liver (Level 3)
 * 3)  Large intestine
 * 4)  Small intestine
 * 5)  Pancreas
 * 6)  Stomach

Integumentary system (9 articles)

 * 1)  Integumentary system
 * 2)  Breast
 * 3)  Feather
 * 4)  Fingerprint
 * 5)  Fur
 * 6)  Hair
 * 7)  Nail (anatomy)
 * 8)  Scale (anatomy)
 * 9)  Skin (Level 3)

Muscular system (5 articles)

 * 1)  Muscular system
 * 2)  Muscle (Level 3)
 * 3)  Myocyte
 * 4)  Sarcomere
 * 5)  Skeletal muscle

Nervous system (25 articles)

 * 1)  Nervous system (Level 3)
 * 2)  Central nervous system
 * 3)  Peripheral nervous system
 * 4)  Brain (Level 3)
 * 5)  Brainstem
 * 6)  Cerebellum
 * 7)  Cerebral cortex
 * 8)  Cerebrum
 * 9)  Neuron
 * 10)  Spinal cord
 * 11)  Sensory nervous system
 * 12)  Sense
 * 13)  Auditory system
 * 14)  Ear (Level 3)
 * 15)  Hearing
 * 16)  Taste
 * 17)  Tongue
 * 18)  Olfactory system
 * 19)  Nose
 * 20)  Olfaction
 * 21)  Somatosensory system
 * 22)  Pain
 * 23)  Visual system
 * 24)  Eye (Level 3)
 * 25)  Visual perception

Reproductive system (9 articles)

 * 1)  Reproductive system
 * 2)  Sex organ
 * 3)  Clitoris
 * 4)  Ovary
 * 5)  Penis
 * 6)  Placenta
 * 7)  Testicle
 * 8)  Uterus
 * 9)  Vagina

Respiratory system (3 articles)

 * 1)  Respiratory system
 * 2)  Gill
 * 3)  Lung (Level 3)

Skeletal system (6 articles)

 * 1)  Skeleton (Level 3)
 * 2)  Bone
 * 3)  Joint
 * 4)  Pelvis
 * 5)  Skull
 * 6)  Vertebral column

Tissues (6 articles)

 * 1)  Connective tissue
 * 2)  Cartilage
 * 3)  Tendon
 * 4)  Epithelium
 * 5)  Muscle tissue
 * 6)  Nervous tissue

Urinary system (3 articles)

 * 1)  Urinary bladder
 * 2)  Kidney
 * 3)  Urinary system

Plant morphology and anatomy (19 articles)

 * 1)  Plant morphology
 * 2)  Flower (Level 3)
 * 3)  Fruit (Level 3)
 * 4)  Berry
 * 5)  Nut (Level 3)
 * 6)  Leaf
 * 7)  Root
 * 8)  Stoma
 * 9)  Seed (Level 3)
 * 10)  Shrub
 * 11)  Tree (Level 3)

Plant stem (3 articles)

 * 1)  Plant stem
 * 2)  Bark
 * 3)  Trunk

Plant tissues (5 articles)

 * 1)  Epidermis
 * 2)  Ground tissue
 * 3)  Meristem
 * 4)  Vascular tissue
 * 5)  Vascular cambium

Fungal morphology and anatomy (2 articles)

 * 1)  Hypha
 * 2)  Mycelium

Biochemistry and molecular biology (43 articles)

 * 1)  Biochemistry
 * 2)  Chemical biology
 * 3)  Molecular biology (Level 3)
 * 4)  Biomolecule
 * 5)  Alkaloid
 * 6)   Caffeine
 * 7)   Cocaine
 * 8)  Morphine
 * 9)  Nicotine
 * 10)  Biological pigment
 * 11)  Carotenoid
 * 12)  Chlorophyll
 * 13)  Melanin
 * 14)  Carbohydrate
 * 15)  Fructose
 * 16)  Glucose
 * 17)  Lactose
 * 18)  Cellulose
 * 19)  Chitin
 * 20)  Glycogen
 * 21)  Starch
 * 22)  Sugar (Level 3)
 * 23)  Hormone
 * 24)  Dopamine
 * 25)  Epinephrine
 * 26)  Estrogen
 * 27)   Insulin
 * 28)  Oxytocin
 * 29)  Plant hormone
 * 30)  Testosterone
 * 31)  Lipid
 * 32)  Cholesterol
 * 33)  Fat
 * 34)  Fatty acid
 * 35)  Nucleic acid
 * 36)  DNA (Level 3)
 * 37)  RNA (Level 3)
 * 38)  Protein (Level 3)
 * 39)  Amino acid
 * 40)  Enzyme
 * 41)  Hemoglobin
 * 42)  Protein (nutrient)
 * 43)  Steroid

Basics (9 articles)

 * 1)  Circadian rhythm
 * 2)  Digestion (Level 3)
 * 3)  Excretion
 * 4)  Metabolism (Level 3)
 * 5)  Muscle contraction
 * 6)  Photosynthesis (Level 3)
 * 7)  Respiration
 * 8)  Thermoregulation
 * 9)  Transpiration

Development (2 articles)

 * 1)  Developmental biology
 * 2)  Human development

Animal ontogeny (13 articles)

 * 1)  Cuticle
 * 2)  Embryo
 * 3)  Fetus
 * 4)  Imago
 * 5)  Larva
 * 6)  Longevity
 * 7)  Metamorphosis
 * 8)  Moulting
 * 9)  Nymph
 * 10)  Ontogeny
 * 11)  Puberty
 * 12)  Pupa
 * 13)  Tadpole

Biological reproduction (8 articles)

 * 1)  Reproduction (Level 3)
 * 2)  Asexual reproduction
 * 3)  Sexual reproduction
 * 4)  Sex (Level 3)
 * 5)  Female
 * 6)  Male
 * 7)  Microbial cyst
 * 8)  Spore

Animal reproduction (6 articles)

 * 1)  Egg
 * 2)  Menstrual cycle
 * 3)  Menopause
 * 4)  Pregnancy (Level 3)
 * 5)  Semen
 * 6)  Sperm

Plant reproduction (7 articles)

 * 1)  Plant reproduction
 * 2)   Alternation of generations
 * 3)  Gametophyte
 * 4)  Plant reproductive morphology
 * 5)  Pollen
 * 6)  Pollination
 * 7)  Sporophyte

Botany (5 articles)

 * 1)  Botany (Level 3)
 * 2)  Plant (Level 2)
 * 3)  Carnivorous plant
 * 4)  Flowering plant
 * 5)  Weed

Cell processes (10 articles)

 * 1)  Active transport
 * 2)  Cell signaling
 * 3)  Cellular respiration
 * 4)  Glycolysis
 * 5)  DNA replication
 * 6)  Fermentation
 * 7)  Programmed cell death
 * 8)   Stem cell
 * 9)  Transcription
 * 10)  Translation (biology)

Cellular division (5 articles)

 * 1)  Cell cycle
 * 2)  Fission
 * 3)  Meiosis
 * 4)   Mitosis
 * 5)  Plasmid

Cell parts (6 articles)

 * 1)   Cell (Level 2)
 * 2)  Cell membrane
 * 3)  Cytoplasm
 * 4)  Cytoskeleton
 * 5)  Flagellum
 * 6)  Symbiogenesis

Organelles (10 articles)

 * 1)  Organelle
 * 2)  Cell nucleus
 * 3)  Chromosome
 * 4)  Centriole
 * 5)  Endoplasmic reticulum
 * 6)  Golgi apparatus
 * 7)  Lysosome
 * 8)  Mitochondrion
 * 9)   Ribosome
 * 10)  Vacuole

Plant cells (4 articles)

 * 1)  Plant cell
 * 2)  Cell wall
 * 3)  Chloroplast
 * 4)  Plastid

Ecology (16 articles)

 * 1)  Ecology (Level 3)
 * 2)  Biome
 * 3)  Biodiversity
 * 4)  Competition (biology)
 * 5)  Ecological niche
 * 6)  Ecosystem (Level 3)
 * 7)  Endangered species
 * 8)  Extinction (Level 3)
 * 9)  Extremophile
 * 10)  Invasive species
 * 11)  Night
 * 12)  Parasitism
 * 13)  Population
 * 14)  Sustainability
 * 15)  Symbiosis
 * 16)  Wildlife conservation

Zoology (17 articles)

 * 1)  Zoology (Level 3)
 * 2)  Animal (Level 2)
 * 3)  Animal coloration
 * 4)  Camouflage
 * 5)  Ethology
 * 6)  Sleep (Level 2)
 * 7)  Hibernation
 * 8)  Carnivore
 * 9)  Predation
 * 10)  Scavenger
 * 11)  Herbivore
 * 12)  Grazing
 * 13)  Animal locomotion
 * 14)  Bipedalism
 * 15)  Animal migration
 * 16)  Instinct
 * 17)   Intelligence

General classification (8 articles)

 * 1)  Arthropod
 * 2)  Bilateria
 * 3)  Chordate
 * 4)  Craniate
 * 5)  Gnathostomata
 * 6)  Invertebrate
 * 7)  Tetrapod
 * 8)  Vertebrate

Cnidarians (3 articles)

 * 1)  Cnidaria
 * 2)  Coral
 * 3)  Jellyfish

Echinoderms (4 articles)

 * 1)  Echinoderm
 * 2)  Sea cucumber
 * 3)  Sea urchin
 * 4)  Starfish

Mollusks (10 articles)

 * 1)  Mollusca
 * 2)  Clam
 * 3)  Mussel
 * 4)  Oyster
 * 5)  Scallop
 * 6)  Octopus
 * 7)  Squid
 * 8)  Conch
 * 9)  Slug
 * 10)  Snail

Porifera (1 article)

 * 1)  Sponge

Arachnids (7 articles)

 * 1)  Acari
 * 2)  Arachnid
 * 3)  Pseudoscorpion
 * 4)  Scorpion
 * 5)  Spider
 * 6)  Tarantula
 * 7)  Tick

Crustaceans (10 articles)

 * 1)  Crustacean
 * 2)  Astacus astacus
 * 3)  Crab
 * 4)  Decapoda
 * 5)   Krill
 * 6)  Lobster
 * 7)  Malacostraca
 * 8)  Ostracod
 * 9)  Shrimp
 * 10)  Woodlouse

Insects (61 articles)
Beetles (Coleoptera) (5 articles) Flies (Diptera) (10 articles) Hemiptera (true bugs) (7 articles) Hymenoptera (10 articles) Lepidoptera (8 articles) Odonata (3 articles) Orthoptera (6 articles)
 * 1)  Insect (Level 3)
 * 2)  Pterygota
 * 3)  Cockroach
 * 4)  Earwig
 * 5)  Flea
 * 6)  Louse
 * 7)  Body louse
 * 8)  Mantis
 * 9)  Phasmatodea
 * 10)  Termite
 * 11)  Thrips
 * 12)  Thysanura
 * 1)  Beetle
 * 2)  Coccinellidae
 * 3)  Dung beetle
 * 4)  Firefly
 * 5)  Weevil
 * 1)  Fly
 * 2)   Drosophila melanogaster
 * 3)  Black fly
 * 4)  Botfly
 * 5)  Crane fly
 * 6)  Calliphoridae
 * 7)  Horse-fly
 * 8)  Housefly
 * 9)  Mosquito
 * 10)  Tsetse fly
 * 1)  Hemiptera
 * 2)  Cicada
 * 3)  Bed bug
 * 4)  Leafhopper
 * 5)  Aphid
 * 6)  Scale insect
 * 7)  Whitefly
 * 1)  Hymenoptera
 * 2)  Ant
 * 3)  Fire ant
 * 4)  Carpenter ant
 * 5)  Bee
 * 6)  Bumblebee
 * 7)  Africanized bee
 * 8)  Western honey bee
 * 9)  Wasp
 * 10)  Hornet
 * 1)  Lepidoptera
 * 2)  Butterfly
 * 3)  Bombyx mori
 * 4)  Geometer moth
 * 5)  Lymantria dispar dispar
 * 6)  Moth
 * 7)  Pieris brassicae
 * 8)  Swallowtail butterfly
 * 1)  Odonata
 * 2)  Damselfly
 * 3)  Dragonfly
 * 1)  Orthoptera
 * 2)  Cricket (insect)
 * 3)  Grasshopper
 * 4)  Mole cricket
 * 5)  Locust
 * 6)  Tettigoniidae

Arthropoda, others (9 articles)
Hexapoda (2 articles) Myriapoda (3 articles) Chelicerata (3 articles)
 * 1)  Trilobite
 * 1)  Hexapoda
 * 2)  Springtail
 * 1)  Myriapoda
 * 2)  Centipede
 * 3)  Millipede
 * 1)  Chelicerata
 * 2)  Eurypterid
 * 3)  Xiphosura

Invertebrata, others (12 articles)
Ecdysozoa (4 articles) Lophotrochozoa (6 articles) Platyzoa (2 articles)
 * 1)  Ecdysozoa
 * 2)  Nematode
 * 3)  Caenorhabditis elegans
 * 4)  Tardigrade
 * 1)  Lophotrochozoa
 * 2)  Annelid
 * 3)  Earthworm
 * 4)  Leech
 * 5)  Polychaete
 * 6)  Bryozoa
 * 1)  Flatworm
 * 2)  Cestoda

Agnatha (4 articles)

 * 1)  Agnatha
 * 2)  Hagfish
 * 3)  Lamprey
 * 4)  Ostracoderm

Fishes (96 articles)
Batoidea (6 articles) Characiformes (3 articles) Chondrosteans (2 articles) Clupeiformes (6 articles) Cypriniformes (8 articles) Cyprinodontiformes (2 articles) Gadiformes (4 articles) Osmeriformes (2 articles) Perciformes (17 articles) Pleuronectiformes (5 articles) Salmoniformes (4 articles) Sharks (6 articles) Siluriformes (2 articles) Syngnathiformes (2 articles) Tetraodontiformes (3 articles)
 * 1)  Fish (Level 3)
 * 2)  Coral reef fish
 * 3)  Deep sea fish
 * 4)  Chondrichthyes
 * 5)  Acanthodii
 * 6)  Osteichthyes
 * 7)  Actinopterygii
 * 8)  Sarcopterygii
 * 9)  Coelacanth
 * 10)  Lungfish
 * 11)  Placodermi
 * 12)  Anglerfish
 * 13)  Arapaima
 * 14)  Chimaera
 * 15)  Eel
 * 16)  Electric eel
 * 17)  Flying fish
 * 18)  Milkfish
 * 19)  Northern pike
 * 20)  Oarfish
 * 21)  Mullet
 * 22)  Ophidiiformes
 * 23)  Scorpaeniformes
 * 24)  Stickleback
 * 1)  Batoidea
 * 2)  Stingray
 * 3)  Manta ray
 * 4)  Skate
 * 5)  Sawfish
 * 6)  Electric ray
 * 1)  Characiformes
 * 2)  Characidae
 * 3)  Piranha
 * 1)  Bichir
 * 2)  Sturgeon
 * 1)  Clupeiformes
 * 2)  Anchovy
 * 3)  Herring
 * 4)  Ilish
 * 5)  Sardine
 * 6)  Sprat
 * 1)  Cypriniformes
 * 2)  Cyprinidae
 * 3)  Carp
 * 4)  Common carp
 * 5)   Goldfish
 * 6)  Grass carp
 * 7)  Koi
 * 8)  Silver carp
 * 1)  Cyprinodontiformes
 * 2)  Guppy
 * 1)  Gadiformes
 * 2)  Alaska pollock
 * 3)  Cod
 * 4)  Haddock
 * 1)  Galaxiidae
 * 2)  Smelt
 * 1)  Perciformes
 * 2)  Barracuda
 * 3)   Cichlid
 * 4)  Tilapia
 * 5)  Goby
 * 6)  Mackerel
 * 7)  Marlin
 * 8)  Mahi-mahi
 * 9)  Serranidae
 * 10)  European bass
 * 11)  Grouper
 * 12)  Siamese fighting fish
 * 13)  Swordfish
 * 14)  Perch
 * 15)  Remora
 * 16)  Tuna
 * 17)  Wrasse
 * 1)  Flatfish
 * 2)  Flounder
 * 3)  Halibut
 * 4)  Plaice
 * 5)  Turbot
 * 1)  Salmonidae
 * 2)  Oncorhynchus
 * 3)  Salmon
 * 4)  Trout
 * 1)  Shark
 * 2)  Great white shark
 * 3)  Hammerhead shark
 * 4)  Tiger shark
 * 5)  Nurse shark
 * 6)  Whale shark
 * 1)  Catfish
 * 2)  Loricariidae
 * 1)  Syngnathiformes
 * 2)  Seahorse
 * 1)  Tetraodontiformes
 * 2)  Ocean sunfish
 * 3)   Tetraodontidae

Amphibians (10 articles)

 * 1)  Amphibian (Level 3)
 * 2)  American bullfrog
 * 3)  Caecilian
 * 4)  Frog
 * 5)  Hylidae
 * 6)  Leptodactylidae
 * 7)  Newt
 * 8)  Salamander
 * 9)  Toad
 * 10)  True frog

Reptiles (50 articles)
Dinosaurs and prehistoric reptiles (13 articles)
 * 1)  Reptile (Level 3)
 * 2)  Alligator
 * 3)  Caiman
 * 4)  Crocodile
 * 5)  Lizard
 * 6)  Chameleon
 * 7)  Gecko
 * 8)  Gila monster
 * 9)  Green iguana
 * 10)  Horned lizard
 * 11)  Komodo dragon
 * 12)  Skink
 * 13)  Snake
 * 14)  Agkistrodon contortrix
 * 15)  Agkistrodon piscivorus
 * 16)  Boidae
 * 17)  Cobra
 * 18)  Coral snake
 * 19)  Garter snake
 * 20)  Hydrophiinae
 * 21)  Kingsnake
 * 22)  Mamba
 * 23)  Rattlesnake
 * 24)  Vipera berus
 * 25)  Tuatara
 * 26)  Turtle
 * 27)  Alligator snapping turtle
 * 28)  Box turtle
 * 29)  Common snapping turtle
 * 30)  Painted turtle
 * 31)  Red-eared slider
 * 32)  Sea turtle
 * 33)  Green sea turtle
 * 34)  Leatherback sea turtle
 * 35)  Loggerhead sea turtle
 * 36)  Tortoise
 * 37)  Galápagos tortoise
 * 1)  Dinosaur (Level 3)
 * 2)  Allosaurus
 * 3)  Apatosaurus
 * 4)  Diplodocus
 * 5)  Iguanodon
 * 6)  Stegosaurus
 * 7)  Triceratops
 * 8)  Tyrannosaurus
 * 9)  Velociraptor
 * 10)  Plesiosauria
 * 11)  Pterosaur
 * 12)  Synapsid
 * 13)  Dimetrodon

Birds (127 articles)
Basic bird articles (10 articles) Accipitriformes and Falconiformes (9 articles) Anseriformes (5 articles) Apodiformes (1 article) Caprimulgiformes (2 articles) Charadriiformes (5 articles) Ciconiiformes (4 articles) Columbiformes (4 articles) Coraciiformes (3 articles) Cuculiformes (3 articles) Galliformes (8 articles) Gruiformes (4 articles) Passerines (40 articles) Corvoidea (9 articles) Passerida (25 articles) Tyranni (4 articles) Pelecaniformes (5 articles) Piciformes (4 articles) Procellariiformes (3 articles) Psittaciformes (6 articles) Ratites (6 articles) Strigiformes (3 articles) Trogoniformes (2 articles)
 * 1)  Bird (Level 3)
 * 2)  Seabird
 * 3)  Bird of prey
 * 4)  Palaeognathae
 * 5)  Archaeopteryx
 * 6)  Flamingo
 * 7)  Hummingbird
 * 8)  Loon
 * 9)  Penguin
 * 10)  Tinamou
 * 1)  Accipiter
 * 2)  Eagle
 * 3)  Golden eagle
 * 4)  Falcon
 * 5)  Peregrine falcon
 * 6)  New World vulture
 * 7)  Old World vulture
 * 8)  Osprey
 * 9)  Secretarybird
 * 1)  Anatidae
 * 2)  Duck
 * 3)  Mallard
 * 4)  Goose
 * 5)  Swan
 * 1)  Swift
 * 1)  Caprimulgiformes
 * 2)  Nightjar
 * 1)  Charadriiformes
 * 2)  Auk
 * 3)  Gull
 * 4)  Sandpiper
 * 5)  Tern
 * 1)  Heron
 * 2)  Ibis
 * 3)  Shoebill
 * 4)  Stork
 * 1)  Columbidae
 * 2)  Dodo
 * 3)  Passenger pigeon
 * 4)  Rock dove
 * 1)  River kingfishers
 * 2)  Hornbill
 * 3)  Hoopoe
 * 1)  Cuckoo
 * 2)  Hoatzin
 * 3)  Turaco
 * 1)  Galliformes
 * 2)  Chicken
 * 3)  Grouse
 * 4)  Guineafowl
 * 5)  Peafowl
 * 6)  Common pheasant
 * 7)  Common quail
 * 8)  Domesticated turkey
 * 1)  Gruiformes
 * 2)  Crane (bird)
 * 3)  Bustard
 * 4)  Rail
 * 1)  Passerine
 * 2)  Songbird
 * 1)  Bird-of-paradise
 * 2)  Bowerbird
 * 3)  Corvidae
 * 4)  Corvus
 * 5)  Common raven
 * 6)  Eurasian magpie
 * 7)  Honeyeater
 * 8)  Lyrebird
 * 9)  Shrike
 * 1)  Bulbul
 * 2)  Cardinal
 * 3)  Emberizidae
 * 4)  Estrildid finch
 * 5)  Finch
 * 6)  Icterid
 * 7)  Lark
 * 8)  Mockingbird
 * 9)  New World warbler
 * 10)  Old World flycatcher
 * 11)  European robin
 * 12)  Common nightingale
 * 13)  Ploceidae
 * 14)  Sparrow
 * 15)  House sparrow
 * 16)  Starling
 * 17)  Common myna
 * 18)  Common starling
 * 19)  Sunbird
 * 20)  Swallow
 * 21)  Tanager
 * 22)  Tit
 * 23)  Thrush
 * 24)  American robin
 * 25)  Wren
 * 1)  Tyranni
 * 2)  Antbird
 * 3)  Ovenbird (family)
 * 4)  Tyrant flycatcher
 * 1)  Cormorant
 * 2)  Darter
 * 3)  Frigatebird
 * 4)  Pelican
 * 5)  Sulidae
 * 1)  Piciformes
 * 2)  Honeyguide
 * 3)  Toucan
 * 4)  Woodpecker
 * 1)  Procellariiformes
 * 2)  Albatross
 * 3)  Procellariidae
 * 1)  Parrot
 * 2)  Ara
 * 3)  Budgerigar
 * 4)  Cockatoo
 * 5)  New Zealand parrot
 * 6)  Lories and lorikeets
 * 1)  Cassowary
 * 2)  Emu
 * 3)  Kiwi
 * 4)  Moa
 * 5)  Common ostrich
 * 6)  Rhea
 * 1)  Owl
 * 2)  Eurasian eagle-owl
 * 3)  Barn owl
 * 1)  Trogon
 * 2)  Resplendent quetzal

Mammals (161 articles)
Bats (5 articles) Carnivora (36 articles) Cetaceans (8 articles) Erinaceids (1 article) Even-toed ungulates (36 articles) Lagomorphs (3 articles) Marsupials (8 articles) Monotremes (3 articles) Odd-toed ungulates (7 articles) Pilosa (2 articles) Pinnipeds (4 articles) Primates (22 articles) Proboscidea (3 articles) Rodents (15 articles) Soricomorpha (2 articles)
 * 1)  Mammal (Level 3)
 * 2)  Aardvark
 * 3)  Armadillo
 * 4)  Hyrax
 * 5)  Pangolin
 * 6)  Sirenia
 * 1)  Bat
 * 2)  Megabat
 * 3)  Microbat
 * 4)  Pteropus
 * 5)  Vampire bat
 * 1)  Carnivora
 * 2)  Bear
 * 3)  Brown bear
 * 4)  Giant panda
 * 5)  Polar bear
 * 6)  Canidae
 * 7)   Dog (Level 3)
 * 8)  Fox
 * 9)  Coyote
 * 10)   Gray wolf
 * 11)  Jackal
 * 12)  Felidae
 * 13)   Cat
 * 14)  Cheetah
 * 15)  Cougar
 * 16)  Jaguar
 * 17)  Leopard
 * 18)  Lion
 * 19)  Lynx
 * 20)  Smilodon
 * 21)  Tiger
 * 22)  Hyena
 * 23)  Mongoose
 * 24)  Mustelidae
 * 25)  European badger
 * 26)  Honey badger
 * 27)  Marten
 * 28)  Otter
 * 29)  Sable
 * 30)  Sea otter
 * 31)  Stoat
 * 32)  Weasel
 * 33)  Wolverine
 * 34)  Procyonidae
 * 35)  Skunk
 * 36)  Viverridae
 * 1)  Cetacea
 * 2)  Whale
 * 3)  Blue whale
 * 4)  Dolphin
 * 5)  Humpback whale
 * 6)  Killer whale
 * 7)  Porpoise
 * 8)   Sperm whale
 * 1)  Hedgehog
 * 1)  Even-toed ungulate
 * 2)  Alpaca
 * 3)  Wild boar
 * 4)  Bovidae
 * 5)  African buffalo
 * 6)  American bison
 * 7)  Antelope
 * 8)  Aurochs
 * 9)  Capra
 * 10)  Cattle (Level 3)
 * 11)  Gazelle
 * 12)  Gaur
 * 13)  Goat
 * 14)  Impala
 * 15)  Muskox
 * 16)  Sheep
 * 17)  Water buffalo
 * 18)  Wildebeest
 * 19)  European bison
 * 20)  Domestic yak
 * 21)  Camel
 * 22)  Bactrian camel
 * 23)  Dromedary
 * 24)  Deer
 * 25)  Elk
 * 26)  Moose
 * 27)  Red deer
 * 28)  Reindeer
 * 29)  Llama
 * 30)  Giraffe
 * 31)  Guanaco
 * 32)  Hippopotamus
 * 33)  Peccary
 * 34)  Domestic pig
 * 35)  Pronghorn
 * 36)  Vicuña
 * 1)  Lagomorpha
 * 2)  Hare
 * 3)  Rabbit
 * 1)  Marsupial
 * 2)  Diprotodontia
 * 3)  Kangaroo
 * 4)  Koala
 * 5)  Dasyuromorphia
 * 6)  Tasmanian devil
 * 7)  Opossum
 * 8)  Peramelemorphia
 * 1)  Monotreme
 * 2)  Echidna
 * 3)  Platypus
 * 1)  Odd-toed ungulate
 * 2)  Donkey
 * 3)  Equidae
 * 4)  Horse (Level 3)
 * 5)  Rhinoceros
 * 6)  Tapir
 * 7)  Zebra
 * 1)  Anteater
 * 2)  Sloth
 * 1)  Pinniped
 * 2)  Eared seal
 * 3)  Earless seal
 * 4)  Walrus
 * 1)  Primate
 * 2)  Monkey
 * 3)  Ape
 * 4)  Chimpanzee
 * 5)  Common chimpanzee
 * 6)  Bonobo
 * 7)  Gibbon
 * 8)  Gorilla
 * 9)  Orangutan
 * 10)    Human (Level 1)
 * 11)  New World monkey
 * 12)  Capuchin monkey
 * 13)  Spider monkey
 * 14)  Old World monkey
 * 15)  Baboon
 * 16)  Macaque
 * 17)  Rhesus macaque
 * 18)  Strepsirrhini
 * 19)  Slow loris
 * 20)  Galago
 * 21)  Lemur
 * 22)  Tarsier
 * 1)  Proboscidea
 * 2)  Elephant
 * 3)  Mammoth
 * 1)  Rodent
 * 2)  Capybara
 * 3)  Coypu
 * 4)  Beaver
 * 5)  Dormouse
 * 6)  Guinea pig
 * 7)  Hamster
 * 8)  Marmot
 * 9)  Mouse
 * 10)  Muridae
 * 11)  Muskrat
 * 12)  Porcupine
 * 13)  Rat
 * 14)  Brown rat
 * 15)  Squirrel
 * 1)  Shrew
 * 2) Mole (animal)

Animal breeds and hybrids (23 articles)
Cats (2 articles) Cattle (3 articles) Dogs (8 articles) Horses (8 articles) Hybrids (1 article) Sheep (1 article)
 * 1)  Siamese cat
 * 2)  Manx cat
 * 1)  Brahman (cattle)
 * 2)  Hereford (cattle)
 * 3)  Holstein Friesian cattle
 * 1)  Beagle
 * 2)  Dachshund
 * 3)  Great Dane
 * 4)  Greyhound
 * 5)  Retriever
 * 6)   German Shepherd
 * 7)  Shih Tzu
 * 8)  Terrier
 * 1)  Arabian horse
 * 2)  Andalusian horse
 * 3)  Appaloosa
 * 4)  Clydesdale horse
 * 5)  Friesian horse
 * 6)  Lipizzan
 * 7)  Thoroughbred
 * 8)  Pony
 * 1)  Mule
 * 1)  Merino

Non-flowering plants (25 articles)
Green algae (3 articles) Bryophytes (5 articles) Pteridophytes (4 articles) Gymnosperms (3 articles) Pinophyta (conifers) (10 articles)
 * 1)  Green algae
 * 2)  Charophyta
 * 3)  Chlorophyta
 * 1)  Bryophyte
 * 2)  Hornwort
 * 3)  Marchantiophyta
 * 4)  Moss
 * 5)  Sphagnum
 * 1)  Pteridophyte
 * 2)  Fern
 * 3)  Equisetum
 * 4)  Lycopodiophyta
 * 1)  Gymnosperm
 * 2)  Cycad
 * 3)  Ginkgo biloba
 * 1)  Pinophyta
 * 2)  Cedrus
 * 3)  Cupressus
 * 4)  Douglas fir
 * 5)  Fir
 * 6)  Juniper
 * 7)  Pine
 * 8)  Podocarpus
 * 9)  Sequoioideae
 * 10)  Spruce

Monocots (34 articles)
Alismatales (3 articles) Arecales (1 article) Asparagales (10 articles) Commelinales (1 article) Liliales (5 articles) Pandanales (2 articles) Poales (9 articles) Zingiberales (2 articles)
 * 1)  Monocotyledon
 * 1)  Araceae
 * 2)  Anthurium
 * 3)  Philodendron
 * 1)  Arecaceae
 * 1)  Agave
 * 2)  Aloe
 * 3)  Amaryllis
 * 4)  Gladiolus
 * 5)  Iridaceae
 * 6)  Iris
 * 7)  Lily of the valley
 * 8)  Narcissus
 * 9)  Orchidaceae
 * 10)  Yucca
 * 1)  Eichhornia crassipes
 * 1)  Alstroemeria
 * 2)  Colchicum
 * 3)  Liliaceae
 * 4)  Lilium
 * 5)  Tulip
 * 1)  Pandanaceae
 * 2)  Pandanus
 * 1)  Bromeliaceae
 * 2)  Puya
 * 3)  Spanish moss
 * 4)  Cyperaceae
 * 5)  Juncus
 * 6)  Poaceae
 * 7)  Bamboo
 * 8)  Sugarcane
 * 9)  Typha
 * 1)  Canna
 * 2)  Heliconia

Non-monocots (67 articles)
Apiales (2 articles) Asterales (11 articles) Brassicales (2 articles) Caryophyllales (1 article) Cornales (1 article) Cucurbitales (1 article) Ericales (8 articles) Fabales (2 articles) Fagales (5 articles) Gentianales (3 articles) Lamiales (6 articles) Malpighiales (5 articles) Malvales (2 articles) Myrtales (4 articles) Proteales (3 articles) Rosales (6 articles) Sapindales (2 articles) Solanales (1 article)
 * 1)  Eudicots
 * 2)  Magnoliids
 * 1)  Apiaceae
 * 2)  Hedera
 * 1)  Asteraceae
 * 2)  Bellis perennis
 * 3)  Chrysanthemum
 * 4)  Cirsium
 * 5)  Dahlia
 * 6)  Goldenrod
 * 7)  Helianthus
 * 8)  Sonchus
 * 9)  Tagetes
 * 10)  Taraxacum
 * 11)  Campanulaceae
 * 1)  Arabidopsis thaliana
 * 2)   Tropaeolum
 * 1)  Cactus
 * 1)  Cornus
 * 1)  Cucurbitaceae
 * 1)  Diospyros
 * 2)  Ericaceae
 * 3)  Rhododendron
 * 4)  Azalea
 * 5)  Theaceae
 * 6)  Camellia
 * 7)  Impatiens
 * 8)  Primulaceae
 * 1)  Fabaceae
 * 2)  Mimosa
 * 1)  Alder
 * 2)  Beech
 * 3)  Birch
 * 4)  Hickory
 * 5)  Oak
 * 1)  Apocynaceae
 * 2)  Gardenia
 * 3)  Rubiaceae
 * 1)  Lamiaceae
 * 2)  Oleaceae
 * 3)  Fraxinus
 * 4)  Salvia
 * 5)  Sesame
 * 6)  Verbena
 * 1)  Euphorbiaceae
 * 2)  Flax
 * 3)  Poinsettia
 * 4)  Viola
 * 5)  Willow
 * 1)  Malvaceae
 * 2)  Adansonia
 * 1)  Henna
 * 2)  Melastomataceae
 * 3)  Myrtaceae
 * 4)  Eucalyptus
 * 1)  Proteaceae
 * 2)  Nelumbo
 * 3)  Platanus
 * 1)  Cannabis
 * 2)  Elm
 * 3)  Moraceae
 * 4)  Ficus sycomorus
 * 5)  Rosaceae
 * 6)  Rose
 * 1)  Mahogany
 * 2)  Maple
 * 1)  Convolvulaceae

Edible fruits (50 articles)
Culinary fruits (38 articles) Botanical fruits used as culinary vegetables (12 articles)
 * 1)  Apple
 * 2)  Apricot
 * 3)  Avocado
 * 4)   Banana
 * 5)  Blackberry
 * 6)  Blackcurrant
 * 7)  Blueberry
 * 8)  Cherry
 * 9)  Citrus
 * 10)  Grapefruit
 * 11)  Kumquat
 * 12)  Lemon
 * 13)  Lime
 * 14)  Orange
 * 15)  Tangerine
 * 16)  Common fig
 * 17)  Cranberry
 * 18)  Date palm
 * 19)  Durian
 * 20)  Grape
 * 21)  Guava
 * 22)  Jackfruit
 * 23)  Kiwifruit
 * 24)  Lychee
 * 25)   Mango
 * 26)  Morus
 * 27)  Muskmelon
 * 28)  Olive
 * 29)  Papaya
 * 30)  Peach
 * 31)  Pear
 * 32)  Pineapple
 * 33)  Plum
 * 34)  Pomegranate
 * 35)  Raspberry
 * 36)  Strawberry
 * 37)  Tamarind
 * 38)  Watermelon
 * 1)  Bell pepper
 * 2)  Breadfruit
 * 3)  Chili pepper
 * 4)  Cooking banana
 * 5)  Cucumber
 * 6)  Cucurbita
 * 7)  Pumpkin
 * 8)  Zucchini
 * 9)  Eggplant
 * 10)  Green bean
 * 11)  Okra
 * 12)  Tomato

Edible seeds, grains, nuts (pulses) (30 articles)
Grains (10 articles) Pseudocereals (3 articles) Nuts (8 articles) Pulses (9 articles)
 * 1)  Barley
 * 2)  Maize (Level 3)
 * 3)  Millet
 * 4)  Oat
 * 5)   Rice (Level 3)
 * 6)  Oryza sativa
 * 7)  Rye
 * 8)  Sorghum
 * 9)  Wheat (Level 3)
 * 10)  Common wheat
 * 1)  Amaranth
 * 2)  Buckwheat
 * 3)  Quinoa
 * 1)  Almond
 * 2)  Brazil nut
 * 3)  Cashew
 * 4)  Chestnut
 * 5)  Hazelnut
 * 6)  Macadamia
 * 7)  Pecan
 * 8)  Walnut
 * 1)  Bean
 * 2)  Vicia faba
 * 3)  Phaseolus lunatus
 * 4)  Soybean (Level 3)
 * 5)  Phaseolus vulgaris
 * 6)  Chickpea
 * 7)  Lentil
 * 8)  Pea
 * 9)  Peanut

Vegetables (54 articles)
Leafy vegetables (9 articles) Root vegetables (5 articles) Other vegetables (9 articles) Herbs and spices (20 articles)
 * 1)  Vegetable (Level 3)
 * 1)  Eruca sativa
 * 2)  Cabbage
 * 3)  Chard
 * 4)  Chinese cabbage
 * 5)  Collard greens
 * 6)  Kale
 * 7)  Lettuce
 * 8)  Rapeseed
 * 9)  Spinach
 * 1)  Arrowroot
 * 2)  Beetroot
 * 3)  Carrot
 * 4)  Cassava
 * 5)  Daikon
 * 6)  Onion
 * 7)  Parsnip
 * 8)   Potato (Level 3)
 * 9)  Radish
 * 10)  Rutabaga
 * 11)  Sugar beet
 * 12)  Sweet potato
 * 13)  Taro
 * 14)  Turnip
 * 15)  Yam
 * 1)  Artichoke
 * 2)  Asparagus
 * 3)  Broccoli
 * 4)  Cauliflower
 * 5)  Celery
 * 6)  Chicory
 * 7)  Coconut
 * 8)  Kohlrabi
 * 9)  Leek
 * 1)  Anise
 * 2)  Basil
 * 3)   Black pepper
 * 4)  Cardamom
 * 5)  Cinnamon
 * 6)  Clove
 * 7)  Cumin
 * 8)  Fennel
 * 9)  Garlic
 * 10)  Ginger
 * 11)  Ginseng
 * 12)  Horseradish
 * 13)  Lavandula
 * 14)  Liquorice
 * 15)  Mentha
 * 16)  Nutmeg
 * 17)  Parsley
 * 18)   Saffron
 * 19)  Thyme
 * 20)  Vanilla

Fungi (14 articles)

 * 1)  Fungus (Level 3)
 * 2)  Mushroom
 * 3)   Yeast
 * 4)  Ascomycota
 * 5)  Basidiomycota
 * 6)  Zygomycota

Edible fungi (6 articles)

 * 1)  Agaricus
 * 2)  Boletus edulis
 * 3)  Chanterelle
 * 4)  Pleurotus ostreatus
 * 5)  Shiitake
 * 6)  Truffle

Poisonous fungi (2 articles)

 * 1)  Amanita muscaria
 * 2)  Amanita phalloides

Other organisms (31 articles)

 * 1)  Eukaryote (Level 3)
 * 2)  Plankton
 * 3)  Protist
 * 4)  Paramecium
 * 5)  Prokaryote
 * 6)  Archaea (Level 3)
 * 7)  Bacteria (Level 3)
 * 8)  Cyanobacteria
 * 9)  Escherichia coli
 * 10)  Staphylococcus aureus
 * 11)  Rhizaria
 * 12)  Excavata
 * 13)  Euglenozoa
 * 14)  Algae (Level 3)
 * 15)  Red algae
 * 16)  Seaweed
 * 17)  Chromalveolata
 * 18)  Heterokont
 * 19)  Brown algae
 * 20)  Kelp
 * 21)  Diatom
 * 22)  Haptophyte
 * 23)  Cryptomonad
 * 24)  Alveolate
 * 25)  Dinoflagellate
 * 26)  Lichen
 * 27)  Amoebozoa
 * 28)  Slime mold
 * 29)  Virus (Level 3)
 * 30)  HIV
 * 31)  Tobacco mosaic virus

Health and fitness (33 articles)

 * 1)  Health (Level 3)
 * 2)  Mental health
 * 3)  Physical fitness
 * 4)  Body mass index
 * 5)  Physical exercise (Level 3)
 * 6)  Hygiene
 * 7)  Bathing
 * 8)  Oral hygiene
 * 9)  Obesity (Level 3)
 * 10)  Weight loss
 * 11)  Ageing (Level 3)
 * 12)   Breastfeeding
 * 13)  Drug  (Level 3)
 * 14)  Tobacco
 * 15)   Opium
 * 16)   Cannabis
 * 17)  Fertilisation
 * 18)  Infertility
 * 19)   Nutrition (Level 3)
 * 20)  Diet
 * 21)  Dietary supplement
 * 22)  Food group
 * 23)  Hunger
 * 24)  Malnutrition (Level 3)
 * 25)  Vitamin
 * 26)  Occupational safety and health
 * 27)  Substance abuse
 * 28)  Addiction (Level 3)
 * 29)  Alcoholism (Level 3)
 * 30)  Substance dependence
 * 31)   Smoking (Level 3)
 * 32)  Cigarette
 * 33)  Stress (biology)

Medicine (120 articles)
See also "Biology" for e.g. anatomy

General concepts (29 articles)

 * 1)  Medicine (Level 2)
 * 2)  First aid
 * 3)  Health care
 * 4)  Veterinary medicine
 * 5)  Physician
 * 6)  Nursing
 * 7)  Coma
 * 8)  Persistent vegetative state
 * 9)  Injury
 * 10)  Blunt trauma
 * 11)  Bone fracture
 * 12)  Bruise
 * 13)  Burn
 * 14)  Frostbite
 * 15)  Wound
 * 16)  Major trauma (Level 3)
 * 17)  Aneurysm
 * 18)  Brain damage
 * 19)  Concussion
 * 20)  Bleeding
 * 21)  Cardiac arrest
 * 22)  Hypoxia
 * 23)  Inflammation
 * 24)  Respiratory failure
 * 25)  Shock
 * 26)  Stroke (Level 3)
 * 27)  Poison
 * 28)  Toxin
 * 29)  Syndrome

Medical procedures (24 articles)

 * 1)  Anesthesia (Level 3)
 * 2)  Medical diagnosis
 * 3)  Medical test
 * 4)  Palliative care
 * 5)  Plastic surgery
 * 6)  Physical examination
 * 7)  Autopsy
 * 8)  Biopsy
 * 9)   Blood pressure
 * 10)  Blood test
 * 11)  Blood transfusion
 * 12)  Eye examination
 * 13)  Lumbar puncture
 * 14)  Pap test
 * 15)  Pulse
 * 16)  Reflex
 * 17)  Sterilization
 * 18)  Therapy
 * 19)  Chemotherapy
 * 20)  Organ transplantation
 * 21)  Physical therapy
 * 22)  Radiation therapy
 * 23)  Surgery (Level 3)
 * 24)  Symptomatic treatment

Disabilities (8 articles)

 * 1)  Visual impairment
 * 2)  Cerebral palsy
 * 3)   Color blindness
 * 4)   Down syndrome
 * 5)  Dyslexia
 * 6)  Hearing loss
 * 7)  Intellectual disability
 * 8)  Physical disability

Human anatomy (12 articles)

 * 1)  Human body (Level 3)
 * 2)  Arm
 * 3)  Face
 * 4)  Foot
 * 5)  Hand
 * 6)  Human brain
 * 7)  Human eye
 * 8)  Gastrointestinal tract
 * 9)  Human leg
 * 10)  Human skeleton
 * 11)  Human tooth
 * 12)  Human voice

Fields of medicine (47 articles)

 * 1)  Alternative medicine
 * 2)  Acupuncture
 * 3)  Chiropractic
 * 4)  Herbalism
 * 5)   Homeopathy
 * 6)  Angiology
 * 7)  Cardiology
 * 8)  Dentistry (Level 3)
 * 9)  Dental restoration
 * 10)  Root canal
 * 11)  Toothache
 * 12)   Tooth decay
 * 13)  Dermatology
 * 14)  Gastroenterology
 * 15)  Geriatrics
 * 16)  Hematology
 * 17)  Blood type
 * 18)  Immunology
 * 19)  Neurology
 * 20)  Obstetrics and gynaecology
 * 21)  Oncology
 * 22)  Ophthalmology
 * 23)  Otorhinolaryngology
 * 24)  Pediatrics
 * 25)  Pharmacology
 * 26)  Antibiotics (Level 3)
 * 27)  Penicillin
 * 28)  Pharmacokinetics
 * 29)  Placebo
 * 30)  Pharmacy
 * 31)  Analgesic
 * 32)  Pharmaceutical drug (Level 3)
 * 33)  Pharmacist
 * 34)  Prescription drug
 * 35)  Psychiatry
 * 36)  Public health
 * 37)  Epidemiology
 * 38)  Preventive healthcare
 * 39)  Pulmonology
 * 40)  Radiology
 * 41)  Reproductive health
 * 42)  Toxicology
 * 43)  Traditional medicine
 * 44)  Ayurveda
 * 45)  Urology
 * 46)  Vaccination
 * 47)  Vaccine (Level 3)

Disease (24 articles)

 * 1)  Disease (Level 2)
 * 2)  Acne
 * 3)  Allergy (Level 3)
 * 4)  Alzheimer's disease
 * 5)  Anemia
 * 6)  Arthritis
 * 7)   Asthma (Level 3)
 * 8)  Autoimmune disease
 * 9)  Bronchitis
 * 10)  Cardiovascular disease (Level 3)
 * 11)  Chronic obstructive pulmonary disease
 * 12)  Cirrhosis
 * 13)  Dementia (Level 3)
 * 14)  Diabetes mellitus (Level 3)
 * 15)  Diarrhea
 * 16)  Epilepsy
 * 17)  Gout
 * 18)  Hepatitis
 * 19)  Hypertension
 * 20)  Meningitis (Level 3)
 * 21)  Migraine
 * 22)  Multiple sclerosis
 * 23)  Myocardial infarction
 * 24)  Parkinson's disease

Cancer (12 articles)

 * 1)  Brain tumor
 * 2)   Cancer (Level 3)
 * 3)  Carcinogen
 * 4)  Breast cancer
 * 5)  Colorectal cancer
 * 6)  Leukemia
 * 7)  Lung cancer
 * 8)  Lymphoma
 * 9)  Neoplasm
 * 10)   Prostate cancer
 * 11)  Skin cancer
 * 12)  Melanoma

Foodborne illness (5 articles)

 * 1)  Foodborne illness
 * 2)  Botulism
 * 3)  Mushroom poisoning
 * 4)  Salmonella
 * 5)  Typhoid fever

Infectious disease (42 articles)

 * 1)  Infection
 * 2)  Pathogen
 * 3)  Anthrax
 * 4)  Bubonic plague
 * 5)  Chickenpox
 * 6)  Cholera
 * 7)  Common cold (Level 3)
 * 8)  Dengue fever
 * 9)  Diphtheria
 * 10)  Dysentery
 * 11)  Ebola virus disease
 * 12)  Encephalitis
 * 13)  Gangrene
 * 14)  Gastroenteritis (Level 3)
 * 15)  Hand, foot, and mouth disease
 * 16)  Influenza (Level 3)
 * 17)  Leprosy
 * 18)   Lyme disease
 * 19)  Malaria (Level 3)
 * 20)   Measles
 * 21)  Mumps
 * 22)  Pertussis
 * 23)   Pneumonia (Level 3)
 * 24)  Poliomyelitis
 * 25)  Prion
 * 26)   Rabies
 * 27)  Scabies
 * 28)  Scarlet fever
 * 29)   Severe acute respiratory syndrome
 * 30)  Sexually transmitted infection (Level 3)
 * 31)  Chlamydia infection
 * 32)  Gonorrhea
 * 33)  Herpes simplex
 * 34)   HIV/AIDS (Level 3)
 * 35)  Syphilis
 * 36)  Smallpox (Level 3)
 * 37)  Tetanus
 * 38)  Transmissible spongiform encephalopathy
 * 39)   Tuberculosis (Level 3)
 * 40)  Typhus
 * 41)  West Nile fever
 * 42)   Yellow fever

Mental disorders (17 articles)

 * 1)  Mental disorder (Level 3)
 * 2)  Anorexia nervosa
 * 3)  Anxiety disorder
 * 4)  Phobia
 * 5)  Posttraumatic stress disorder
 * 6)  Attention deficit hyperactivity disorder
 * 7)  Autism spectrum
 * 8)  Bipolar disorder
 * 9)  Major depressive disorder (Level 3)
 * 10)  Neurosis
 * 11)  Pedophilia
 * 12)  Personality disorder
 * 13)  Psychopathy
 * 14)   Psychosis
 * 15)  Delusion
 * 16)  Hallucination
 * 17)  Schizophrenia

=Physical sciences (1060 articles)=

Basics (12 articles)

 * 1)  Science (Level 1)
 * 2)  Nature (Level 2)
 * 3)  Scientific method (Level 3)
 * 4)  Observation
 * 5)  Experiment
 * 6)  Field research
 * 7)  Laboratory
 * 8)  Research
 * 9)  Scientific theory
 * 10)  Physical law
 * 11)  Scientific modelling
 * 12)  Scientist

Measurement (73 articles)
This list contains units of measurement and articles on metrology. For the measured quantities (see the Science and Mathematics sections. For timekeeping and navigation (see the Everyday Life and Technology sections. For measurement errors (see the Statistics section in Mathematics.


 * 1)  Measurement (Level 3)
 * 2)  Accuracy and precision
 * 3)  Measuring instrument
 * 4)  Sensor
 * 5)  Metrology
 * 6)  Units of measurement
 * 7)  Metric system (Level 3)
 * 8)  International System of Units
 * 9)  United States customary units
 * 10)  Imperial units
 * 11)  Natural units
 * 12)  Planck units

Angle (3 articles)

 * 1)  Degree
 * 2)  Radian
 * 3)  Steradian

Dimension (13 articles)
Area (2 articles Length (9 articles)
 * 1)  Acre
 * 2)  Hectare
 * 1)  Inch
 * 2)  Foot
 * 3)  Cubit
 * 4)  Metre
 * 5)  Mile
 * 6)  Nautical mile
 * 7)  Astronomical unit
 * 8)  Light-year
 * 9)  Parsec

Volume (2 articles)
 * 1)  Gallon
 * 2)  Litre

Electromagnetism (11 articles)

 * 1)  Ampere
 * 2)  Farad
 * 3)  Coulomb
 * 4)  Henry
 * 5)  Hertz
 * 6)  Ohm
 * 7)  Siemens
 * 8)  Tesla
 * 9)  Volt
 * 10)  Watt
 * 11)  Weber

Light (3 articles)

 * 1)  Candela
 * 2)  Lumen
 * 3)  Lux

Mechanics (13 articles)
Energy, force and pressure (5 articles) Mass (7 articles) Velocity (1 article)
 * 1)  Calorie
 * 2)  Electronvolt
 * 3)  Joule
 * 4)  Newton
 * 5)  Pascal
 * 1)  Unified atomic mass unit
 * 2)  Avoirdupois
 * 3)  Kilogram
 * 4)  Ton
 * 5)  Pound
 * 6)  Ounce
 * 7)  Troy weight
 * 1)  Knot

Quantity (3 articles)
Amount of substance (1 article) Data (2 articles)
 * 1)  Mole
 * 1)  Byte
 * 2)  Bit

Radioactivity (3 articles)

 * 1)  Becquerel
 * 2)  Gray
 * 3)  Sievert

Temperature (3 articles)

 * 1)  Celsius
 * 2)  Fahrenheit
 * 3)  Kelvin

Time (7 articles)

 * 1)  Second
 * 2)  Minute
 * 3)  Hour
 * 4)  Day (Level 3)
 * 5)  Week
 * 6)  Month
 * 7)  Year (Level 3)

Other (2 articles)

 * 1)  Decibel
 * 2)  Katal

Astronomy (194 articles)
For astronomical instruments, see the Optical Technology section

Basics (8 articles)

 * 1)  Astronomy (Level 2)
 * 2)  Astrophysics
 * 3)  Astrobiology
 * 4)   Extraterrestrial life

Observational astronomy (4 articles)
 * 1)  Observatory
 * 2)  Luminosity
 * 3)  Magnitude
 * 4)  Extinction

Astronomical objects (66 articles)

 * 1)  Astronomical object

Solar System (25 articles)

 * 1)  Solar System (Level 3)
 * 2)  Sun (Level 3)
 * 3)  Mercury (Level 3)
 * 4)  Venus (Level 3)
 * 5)  Earth (Level 1)
 * 6)  Moon (Level 3)
 * 7)  Mars (Level 3)
 * 8)  Asteroid belt
 * 9)  Ceres
 * 10)  Jupiter (Level 3)
 * 11)  Io
 * 12)  Europa
 * 13)  Ganymede
 * 14)  Callisto
 * 15)  Saturn (Level 3)
 * 16)  Enceladus
 * 17)  Titan
 * 18)  Uranus (Level 3)
 * 19)  Neptune (Level 3)
 * 20)  Triton
 * 21)  Kuiper belt
 * 22)  Pluto
 * 23)  Eris
 * 24)  Oort cloud
 * 25)  Interplanetary medium

Bright stars (18 articles)

 * 1)  Achernar
 * 2)  Aldebaran
 * 3)  Alpha Centauri
 * 4)  Alpha Crucis
 * 5)  Altair
 * 6)  Antares
 * 7)  Arcturus
 * 8)  Beta Centauri
 * 9)  Betelgeuse
 * 10)  Canopus
 * 11)  Capella
 * 12)  Deneb
 * 13)  Fomalhaut
 * 14)  Pollux
 * 15)  Procyon
 * 16)  Rigel
 * 17)  Sirius
 * 18)  Vega

Variable stars (3 articles)

 * 1)  Algol
 * 2)  Eta Carinae
 * 3)  Polaris

Galaxies (8 articles)

 * 1)  Local Group
 * 2)  Milky Way (Level 3)
 * 3)  Andromeda Galaxy
 * 4)  Large Magellanic Cloud
 * 5)  Small Magellanic Cloud
 * 6)  Triangulum Galaxy
 * 7)  Centaurus A
 * 8)  Messier 87

Other objects (11 articles)

 * 1)  3C 273
 * 2)   Crab Nebula
 * 3)  Cygnus X-1
 * 4)  Halley's Comet
 * 5)  Hyades
 * 6)  Omega Centauri
 * 7)  Orion Nebula
 * 8)  Pleiades
 * 9)  Sagittarius A*
 * 10)  Virgo Supercluster
 * 11)  Virgo Cluster

Astrometry (5 articles)

 * 1)  Astrometry
 * 2)  Albedo
 * 3)  Cosmic distance ladder
 * 4)  Parallax
 * 5)  Photometry

Celestial mechanics (11 articles)

 * 1)  Celestial mechanics
 * 2)  Natural satellite (Level 3)
 * 3)  Orbit (Level 3)
 * 4) Barycenter
 * 5) Tidal locking
 * 6)  Eclipse
 * 7)  Lunar eclipse
 * 8)  Solar eclipse
 * 9)  Epoch
 * 10)  Kepler's laws of planetary motion
 * 11)  Lagrangian point

Celestial sphere (8 articles)

 * 1)  Celestial sphere
 * 2)  Celestial coordinate system
 * 3)  Equatorial coordinate system
 * 4)  Equinox
 * 5)  Ecliptic
 * 6)  Horizon
 * 7)  Solstice
 * 8)  Zodiac

Constellations (8 articles)

 * 1)  Constellation
 * 2)  Canis Major
 * 3)  Cassiopeia
 * 4)  Centaurus
 * 5)  Crux
 * 6)  Orion
 * 7)  Ursa Major
 * 8)  Ursa Minor

Basics (15 articles)

 * 1)  Outer space (Level 3)
 * 2)  Galaxy (Level 3)
 * 3)   Black hole (Level 3)
 * 4)  Schwarzschild radius
 * 5)  Supermassive black hole
 * 6)  Galaxy groups and clusters
 * 7)  Supercluster
 * 8)  Interstellar medium
 * 9)  Nebula
 * 10)  Dark nebula
 * 11)  Molecular cloud
 * 12)  Great Attractor
 * 13)  H II region
 * 14)  Void (astronomy)
 * 15)  Cosmic ray

Galaxy morphological classification (6 articles)

 * 1)  Galaxy morphological classification
 * 2)  Spiral galaxy
 * 3)  Elliptical galaxy
 * 4)  Lenticular galaxy
 * 5)  Irregular galaxy
 * 6)  Dwarf galaxy

Active galactic nucleus (6 articles)

 * 1)  Active galactic nucleus
 * 2)  Radio galaxy
 * 3)  Seyfert galaxy
 * 4)  Starburst galaxy
 * 5)  Blazar
 * 6)  Quasar

Physical cosmology (16 articles)

 * 1)  Physical cosmology (Level 3)
 * 2)  Universe (Level 2)
 * 3)  Observable universe
 * 4)  Chronology of the universe
 * 5)  Ultimate fate of the universe
 * 6)  Big Bang (Level 3)
 * 7)   inflation (cosmology)
 * 8)   Cosmic microwave background
 * 9)  Galaxy formation and evolution
 * 10)  Formation and evolution of the Solar System
 * 11)  Nebular hypothesis
 * 12)   Dark matter
 * 13)  Dark energy
 * 14)  Cosmological constant
 * 15)  Redshift
 * 16)   Hubble's law

Planetary science (12 articles)

 * 1)  Planet (Level 3)
 * 2)  Terrestrial planet
 * 3)  Giant planet
 * 4)   Exoplanet
 * 5)  Atmosphere
 * 6)  Ring system
 * 7)  Minor planet
 * 8)   Asteroid (Level 3)
 * 9)  Dwarf planet
 * 10)   Comet (Level 3)
 * 11)  Meteor shower
 * 12)  Impact event

Stellar astronomy (33 articles)

 * 1)  Star (Level 3)
 * 2)  Variable star
 * 3)  Supernova (Level 3)
 * 4)  Gamma-ray burst
 * 5)  Nova
 * 6)  Pulsar
 * 7)  Cepheid variable
 * 8)  Long-period variable star
 * 9)  Star system
 * 10)  Planetary system
 * 11)   Binary star
 * 12)  Circumstellar disc
 * 13)  Star cluster
 * 14)  Stellar evolution
 * 15)  Star formation
 * 16)   Planetary nebula
 * 17)  Protostar
 * 18)  Pre-main-sequence star
 * 19)  Main sequence
 * 20)  Giant star
 * 21)  Supergiant
 * 22)  Wolf–Rayet star
 * 23)  White dwarf
 * 24)  Neutron star
 * 25)  Stellar classification
 * 26)  Stellar kinematics
 * 27)  Stellar magnetic field
 * 28)  Stellar nucleosynthesis
 * 29)  Stellar rotation
 * 30)  Solar wind
 * 31)  Metallicity
 * 32)  Brown dwarf
 * 33)  Hertzsprung–Russell diagram

Chemistry (259 articles)
For biochemistry and chemical biology see the Biology and health sciences section; for chemical industry see the Technology section

Basics (47 articles)

 * 1)  Chemistry (Level 2)
 * 2)  Organic chemistry (Level 3)
 * 3)  Inorganic chemistry (Level 3)
 * 4)  Physical chemistry (Level 3)
 * 5)  Electrochemistry
 * 6)  Electrolysis (Level 3)
 * 7)  Environmental chemistry
 * 8)  Medicinal chemistry
 * 9)  Nuclear chemistry
 * 10)  Nuclide
 * 11)  Organometallic chemistry
 * 12)  Photochemistry
 * 13)  Polymer chemistry
 * 14)  Polymer
 * 15)   Quantum chemistry
 * 16)  Materials science
 * 17)   Alchemy
 * 18)  Chemical bond (Level 3)
 * 19)  Molecule (Level 3)
 * 20)  Ionic bonding
 * 21)  Covalent bond
 * 22)  Metallic bonding
 * 23)  Intermolecular force
 * 24)  Hydrogen bond
 * 25)  Valence bond theory
 * 26)  Chemical reaction (Level 3)
 * 27)  Acid–base reaction (Level 3)
 * 28)  Catalysis (Level 3)
 * 29)  Chemical equation
 * 30)  Chemical equilibrium
 * 31)  Chemical formula
 * 32)  Chemical kinetics
 * 33)  Combustion
 * 34)  Haber process
 * 35)  Radical
 * 36)  Reaction mechanism
 * 37)  Redox
 * 38)  Corrosion
 * 39)  Substitution reaction
 * 40)  Chemical substance
 * 41)  Amount of substance
 * 42)  Chemical synthesis
 * 43)  Conservation of mass

Separation processes (4 articles)

 * 1)  Centrifuge
 * 2)  Chromatography
 * 3)  Distillation
 * 4)  Filtration

Analytical chemistry (5 articles)

 * 1)  Analytical chemistry
 * 2)  Spectroscopy
 * 3)  Absorption spectroscopy
 * 4)  Spectrometer
 * 5)  Mass spectrometry

Chemical elements (121 articles)
Basics (5 articles) Chemical element groups (10 articles) Chemical elements (106 articles)
 * 1)  Chemical element (Level 2)
 * 2)  Periodic table (Level 3)
 * 3)  Allotropy
 * 4)  Atomic number
 * 5)  Atomic mass
 * 1)  Metal (Level 3)
 * 2)  Alkali metal
 * 3)  Alkaline earth metal
 * 4)  Lanthanide
 * 5)  Actinide
 * 6)  Transition metal
 * 7)  Metalloid
 * 8)  Halogen
 * 9)  Noble gas
 * 10)  Transactinide element


 * 1)  Hydrogen (Level 3)
 * 2)  Helium


 * 1)  Lithium
 * 2)  Beryllium
 * 3)  Boron
 * 4)  Carbon (Level 3)
 * 5)  Diamond
 * 6)  Graphite
 * 7)  Nitrogen (Level 3)
 * 8)  Oxygen (Level 3)
 * 9)   Ozone
 * 10)  Fluorine
 * 11)  Neon


 * 1)  Sodium
 * 2)  Magnesium
 * 3)   Aluminium (Level 3)
 * 4)  Silicon (Level 3)
 * 5)  Phosphorus
 * 6)  Sulfur
 * 7)  Chlorine
 * 8)  Argon


 * 1)  Potassium
 * 2)  Calcium
 * 3)  Scandium
 * 4)  Titanium
 * 5)  Vanadium
 * 6)  Chromium
 * 7)  Manganese
 * 8)  Iron (Level 3)
 * 9)  Cobalt
 * 10)  Nickel
 * 11)  Copper (Level 3)
 * 12)  Zinc
 * 13)  Gallium
 * 14)  Germanium
 * 15)  Arsenic
 * 16)  Selenium
 * 17)  Bromine
 * 18)  Krypton


 * 1)  Rubidium
 * 2)  Strontium
 * 3)  Yttrium
 * 4)  Zirconium
 * 5)  Niobium
 * 6)  Molybdenum
 * 7)  Technetium
 * 8)  Ruthenium
 * 9)  Rhodium
 * 10)  Palladium
 * 11)   Silver (Level 3)
 * 12)  Cadmium
 * 13)  Indium
 * 14)  Tin
 * 15)  Antimony
 * 16)  Tellurium
 * 17)  Iodine
 * 18)  Xenon


 * 1)  Caesium
 * 2)  Barium
 * 3)  Lanthanum
 * 4)  Cerium
 * 5)  Praseodymium
 * 6)  Neodymium
 * 7)  Promethium
 * 8)  Samarium
 * 9)  Europium
 * 10)  Gadolinium
 * 11)  Terbium
 * 12)  Dysprosium
 * 13)  Holmium
 * 14)  Erbium
 * 15)  Thulium
 * 16)  Ytterbium
 * 17)  Lutetium
 * 18)  Hafnium
 * 19)  Tantalum
 * 20)  Tungsten
 * 21)  Rhenium
 * 22)  Osmium
 * 23)  Iridium
 * 24)  Platinum
 * 25)  Gold (Level 3)
 * 26)  Mercury (element)
 * 27)  Thallium
 * 28)  Lead
 * 29)  Bismuth
 * 30)  Polonium
 * 31)  Astatine
 * 32)  Radon


 * 1)  Francium
 * 2)  Radium
 * 3)  Actinium
 * 4)  Thorium
 * 5)  Protactinium
 * 6)  Uranium
 * 7)  Neptunium
 * 8)  Plutonium
 * 9)  Americium
 * 10)  Curium
 * 11)  Berkelium
 * 12)  Californium
 * 13)  Einsteinium
 * 14)  Fermium
 * 15)  Mendelevium
 * 16)  Nobelium
 * 17)  Lawrencium

Chemical compounds (73 articles)
Inorganic compounds (36 articles) Salts (18 articles) Organic compounds (35 articles) Carbon–nitrogen bond (2 articles) Carbon–oxygen bond (15 articles) Hydrocarbons (12 articles)
 * 1)  Chemical compound (Level 3)
 * 2)  Inorganic compound
 * 3)  Organic compound
 * 1)   Water (Level 2)
 * 2)  Acid
 * 3)  Boric acid
 * 4)  Hydrochloric acid
 * 5)  Hydrofluoric acid
 * 6)  Nitric acid
 * 7)  Phosphoric acid
 * 8)  Sulfuric acid
 * 9)  Base
 * 10)   Ammonia
 * 11)  Potassium hydroxide
 * 12)   Sodium hydroxide
 * 13)  Oxide
 * 14)   Carbon dioxide (Level 3)
 * 15)  Carbon monoxide
 * 16)  Titanium dioxide
 * 17)  Peroxide
 * 1)  Salt (chemistry)
 * 2)  Carbonate
 * 3)  Calcium carbonate
 * 4)  Sodium bicarbonate
 * 5)  Sodium carbonate
 * 6)  Chloride
 * 7)   Calcium chloride
 * 8)  Sodium chloride
 * 9)  Nitrate
 * 10)  Ammonium nitrate
 * 11)  Potassium nitrate
 * 12)  Sodium nitrate
 * 13)  Sulfate
 * 14)  Alum
 * 15)   Sodium sulfate
 * 16)  Ammonium sulfate
 * 17)  Magnesium sulfate
 * 18)  Sodium silicate
 * 1)  Haloalkane
 * 2)  Organophosphorus compound
 * 3)  Organosilicon
 * 4)  Silicone
 * 5)  Organosulfur compounds
 * 6)  Thiol
 * 1)  Amide
 * 2)  Amine
 * 1)  Alcohol
 * 2)   Ethanol
 * 3)  Methanol
 * 4)  Aldehyde
 * 5)  Formaldehyde
 * 6)  Carboxylic acid
 * 7)  Acetic acid
 * 8)  Citric acid
 * 9)  Lactic acid
 * 10)  Ester
 * 11)  Ether
 * 12)  Ketone
 * 13)  Acetone
 * 14)  Phenol
 * 15)  Tannic acid
 * 1)  Hydrocarbon
 * 2)  Alkane
 * 3)  Butane
 * 4)  Ethane
 * 5)  Methane
 * 6)  Propane
 * 7)  Alkene
 * 8)  Ethylene
 * 9)  Propene
 * 10)  Aromatic hydrocarbon
 * 11)   Benzene
 * 12)  Alkyne

Chemical mixtures (13 articles)

 * 1)  Alloy (Level 3)
 * 2)  Mixture
 * 3)  Aerosol
 * 4)  Amalgam
 * 5)  Colloid
 * 6)  Dispersion
 * 7)  Emulsion
 * 8)  Foam
 * 9)  Gel
 * 10)  Solution
 * 11)  Suspension
 * 12)  Syngas
 * 13)  Vapor

Earth science (256 articles)
For specific geographical objects see Geography

Basics (1 article)

 * 1)  Earth science (Level 3)

Natural disasters (8 articles)

 * 1)  Natural disaster
 * 2)  Earthquake (Level 3)
 * 3)  Flood (Level 3)
 * 4)  Drought
 * 5)  Avalanche
 * 6)  Landslide
 * 7)   Tsunami
 * 8)  Wildfire

Earth (157 articles)

 * 1)  Structure of the Earth (Level 3)

Geology (51 articles)
Mineralogy (11 articles) Mineral gemstones (4 articles) Organic gemstones (3 articles)
 * 1)  Geology (Level 3)
 * 2)   Plate tectonics (Level 3)
 * 3)  Fold
 * 4)  Stratigraphic unit
 * 5)  Meteorite
 * 6)  Impact crater
 * 7)  Lithosphere
 * 8)  Crust
 * 9)  Fault
 * 10)  Stratigraphy
 * 11)  Thrust fault
 * 1)  Mineral (Level 3)
 * 2)  Mineralogy
 * 3)  Feldspar
 * 4)  Kaolinite
 * 5)  Pyroxene
 * 6)  Quartz
 * 7)  Silicate
 * 8)  Talc
 * 9)  Mica
 * 10)  Gypsum
 * 11)  Asbestos
 * 1)  Emerald
 * 2)  Jade
 * 3)  Sapphire
 * 4)  Ruby
 * 1)  Amber
 * 2)  Ivory
 * 3)  Pearl

Petrology (22 articles)
 * 1)  Petrology
 * 2)  Rock (Level 3)
 * 3)  Igneous rock
 * 4)  Basalt
 * 5)  Granite
 * 6)  Magma
 * 7)  Tuff
 * 8)  Sedimentary rock
 * 9)  Limestone
 * 10)  Clay
 * 11)  Sand
 * 12)  Oil shale
 * 13)  Sandstone
 * 14)  Bauxite
 * 15)  Metamorphic rock
 * 16)  Schist
 * 17)  Marble
 * 18)  Gneiss
 * 19)  Slate
 * 20)  Conglomerate
 * 21)  Breccia
 * 22)  Gravel

Geophysics (7 articles)

 * 1)  Geophysics
 * 2)  Geodesy
 * 3)  Earth's magnetic field
 * 4)  Inner core
 * 5)  Outer core
 * 6)  Mantle
 * 7)  Seismology

Geological history (24 articles)
Geological periods (12 articles)
 * 1)  Geochronology
 * 2)   Geologic time scale
 * 3)  Great Oxygenation Event
 * 4)  Cambrian explosion
 * 5)  Extinction event
 * 6)  Ordovician–Silurian extinction events
 * 7)  Late Devonian extinction
 * 8)  Permian–Triassic extinction event
 * 9)  Triassic–Jurassic extinction event
 * 10)  Cretaceous–Paleogene extinction event
 * 11)  Ice age
 * 12)  Pangaea
 * 1)  Precambrian
 * 2)  Phanerozoic
 * 3)  Paleozoic
 * 4)  Cambrian
 * 5)  Permian
 * 6)  Mesozoic
 * 7)  Triassic
 * 8)  Jurassic
 * 9)  Cretaceous
 * 10)  Cenozoic
 * 11)  Quaternary
 * 12)  Holocene

Geomorphology (49 articles)
Landforms (46 articles)
 * 1)  Geomorphology
 * 2)  Erosion (Level 3)
 * 3)  Weathering
 * 1)  Landform
 * 2)  Land (Level 2)
 * 3)  Continent (Level 3)
 * 4)  Mountain (Level 3)
 * 5)  Mountain range
 * 6)  Hill
 * 7)  Valley
 * 8)  Plateau
 * 9)  Mesa
 * 10)  Plain
 * 11)  Sedimentary basin

Fluvial landforms (9 articles) Glacial landforms (2 articles) Caves (2 articles) Oceanic and coastal landforms (12 articles) Volcanic landforms (5 articles) Aeolian landforms (2 articles) Artificial landforms (3 articles)
 * 1)  Alluvial fan
 * 2)  Beach
 * 3)  Canyon
 * 4)  Cliff
 * 5)  Floodplain
 * 6)  Meander
 * 7)  Oasis
 * 8)  Rapids
 * 9)  Waterfall
 * 1)  Glacial landform
 * 2)  Fjord
 * 1)  Cave
 * 2)  Karst
 * 1)  Abyssal plain
 * 2)  Archipelago
 * 3)  Bay
 * 4)  Coast
 * 5)  Continental shelf
 * 6)  Coral reef
 * 7)  Atoll
 * 8)  Lagoon
 * 9)  Oceanic trench
 * 10)  Peninsula
 * 11)  Island
 * 12)  Seamount
 * 1)   Volcano (Level 3)
 * 2)   Geyser
 * 3)  Hotspot
 * 4)  Lava
 * 5)  Mid-ocean ridge
 * 1)  Aeolian processes
 * 2)  Dune
 * 1)  Artificial island
 * 2)  Land reclamation
 * 3)  Polder

Biomes (19 articles)
Forests (7 articles) Grasslands (4 articles) Wetlands (4 articles)
 * 1)  Desert (Level 3)
 * 2)  Tundra
 * 3)  Heath
 * 4)  Moorland
 * 1)  Forest (Level 3)
 * 2)  Jungle
 * 3)  Mangrove
 * 4)  Taiga
 * 5)  Rainforest
 * 6)  Tropical rainforest
 * 7)  Temperate broadleaf and mixed forest
 * 1)  Grassland
 * 2)  Meadow
 * 3)  Savanna
 * 4)  Steppe
 * 1)  Wetland
 * 2)  Swamp
 * 3)  Marsh
 * 4)  Bog

Pedology (7 articles)

 * 1)   Soil (Level 3)
 * 2)  Peat
 * 3)  Pedogenesis
 * 4)  Pedosphere
 * 5)  Sediment
 * 6)  Soil fertility
 * 7)  Soil science

Atmosphere (9 articles)
Atmospheric optics (4 articles)
 * 1)  Atmosphere of Earth (Level 3)
 * 2)  Air mass
 * 3)  Atmospheric pressure
 * 4)  Atmospheric sciences
 * 5)  Ozone depletion
 * 1)  Aurora
 * 2)  Mirage
 * 3)   Rainbow
 * 4)  Sky

Climatology (8 articles)

 * 1)  Climatology
 * 2)  Climate (Level 2)
 * 3)  Global warming (Level 3)
 * 4)   Climate change
 * 5)  El Niño–Southern Oscillation
 * 6)  Köppen climate classification
 * 7)  Temperate climate
 * 8)  Tropical climate

Meteorology (43 articles)
Clouds (5 articles) Precipitation (7 articles)
 * 1)  Meteorology
 * 2)  Weather (Level 3)
 * 3)  Weather front
 * 4)  Weather forecasting
 * 5)  Humidity
 * 6)  Low-pressure area
 * 7)  Barometer
 * 1)  Cloud (Level 3)
 * 2)  Cirrus cloud
 * 3)  Cumulonimbus cloud
 * 4)  Cumulus cloud
 * 5)  Fog
 * 1)  Precipitation
 * 2)  Rain (Level 3)
 * 3)  Snow (Level 3)
 * 4)  Acid rain
 * 5)  Hail
 * 6)  Dew
 * 7)  Frost

Seasons (5 articles) Atmospheric circulation (19 articles) Storms (7 articles)
 * 1)  Season (Level 3)
 * 2)  Spring (season)
 * 3)  Summer
 * 4)  Autumn
 * 5)  Winter
 * 1)  Atmospheric circulation
 * 2)  Anticyclone
 * 3)  Cyclone
 * 4)  Extratropical cyclone
 * 5)  Hadley cell
 * 6)  Polar vortex
 * 7)  Walker circulation
 * 1)  Storm
 * 2)  Tornado (Level 3)
 * 3)  Tropical cyclone (Level 3)
 * 4)  Blizzard
 * 5)  Dust storm
 * 6)  Lightning
 * 7)  Thunderstorm

Winds (5 articles)
 * 1)  Wind (Level 3)
 * 2)  Jet stream
 * 3)  Monsoon
 * 4)  Sea breeze
 * 5)  Trade winds

Water (30 articles)

 * 1)  Hydrosphere
 * 2)  Cryosphere

Oceanography (8 articles)

 * 1)  Oceanography
 * 2)  Sea (Level 2)
 * 3)  Ocean
 * 4)  Tide
 * 5)  Sea level
 * 6)  Seabed
 * 7)  Ocean current
 * 8)  Thermohaline circulation

Glaciology (7 articles)

 * 1)   Glacier (Level 3)
 * 2)  Ice
 * 3)  Ice sheet
 * 4)  Ice shelf
 * 5)  Iceberg
 * 6)  Sea ice
 * 7)  Permafrost

Hydrology (13 articles)

 * 1)  Hydrology
 * 2)   Water cycle
 * 3)  Groundwater
 * 4)  Spring (hydrology)
 * 5)  Hydrography
 * 6)  Limnology
 * 7)  Lake (Level 3)
 * 8)  Dry lake
 * 9)  Pond
 * 10)  River (Level 3)
 * 11)  Drainage basin
 * 12)  Estuary
 * 13)  River delta

Basics (21 articles)

 * 1)   Physics (Level 2)
 * 2)  Atom (Level 2)
 * 3)  Time (Level 2)
 * 4)  Energy (Level 2)
 * 5)  Conservation of energy
 * 6)  Matter (Level 3)
 * 7)  Space (Level 3)
 * 8)  Vacuum (Level 3)
 * 9)  Force (Level 3)
 * 10)  Gravity (Level 3)
 * 11)  Strong interaction (Level 3)
 * 12)  Weak interaction (Level 3)
 * 13)  Spacetime
 * 14)  Mass–energy equivalence
 * 15)  Quantum gravity
 * 16)  Radiation
 * 17)  Ionizing radiation
 * 18)  Field (physics)
 * 19)  Flux
 * 20)  Gauge theory
 * 21)  Symmetry (physics)

Atomic physics (12 articles)

 * 1)  Atomic physics
 * 2)  Ion (Level 3)
 * 3)  Atomic nucleus
 * 4)  Atomic orbital
 * 5)  Atomic theory
 * 6)  Binding energy
 * 7)  Bohr model
 * 8)  Bremsstrahlung
 * 9)  Electron configuration
 * 10)  Electron shell
 * 11)  Energy level
 * 12)  Geiger–Marsden experiment

Molecular physics (2 articles)

 * 1)  Molecular orbital
 * 2)  Molecular orbital theory

Optics (6 articles)

 * 1)  Optics (Level 3)
 * 2)  Polarization
 * 3)  Reflection
 * 4)  Refraction
 * 5)  Refractive index
 * 6)  Transparency and translucency

Condensed matter physics (24 articles)

 * 1)  Condensed matter physics
 * 2)  Solid-state physics
 * 3)  Amorphous solid

Crystallography (3 articles)

 * 1)  Crystallography
 * 2)  Crystal
 * 3)  Crystallization

States of matter (7 articles)

 * 1)  State of matter (Level 3)
 * 2)  Solid
 * 3)  Liquid
 * 4)  Gas
 * 5)  Plasma
 * 6)  Bose–Einstein condensate
 * 7)   Superconductivity

Phase transitions (11 articles)

 * 1)  Phase transition
 * 2)  Phase
 * 3)  Boiling
 * 4)  Melting
 * 5)  Freezing
 * 6)  Evaporation
 * 7)  Condensation
 * 8)  Ionization
 * 9)  Sublimation
 * 10)  Critical point
 * 11)  Triple point

Electromagnetism (40 articles)

 * 1)  Electromagnetism (Level 3)
 * 2)  Electricity (Level 2)
 * 3)  Magnetism (Level 3)
 * 4)  Dielectric
 * 5)  Dipole
 * 6)  Metamaterial
 * 7)  Oil drop experiment
 * 8)  Photoelectric effect

Electrostatics (5 articles)

 * 1)  Electrostatics
 * 2)  Coulomb's law
 * 3)  Electric charge
 * 4)  Electric field
 * 5)  Electric potential

Electrodynamics (15 articles)

 * 1)  Electromagnetic radiation (Level 3)
 * 2)  Electromagnetic spectrum
 * 3)  Radio wave
 * 4)  Microwave
 * 5)  Infrared
 * 6)  Visible spectrum
 * 7)   Ultraviolet
 * 8)  X-ray
 * 9)  Fluorescence
 * 10)  Electromagnetic field
 * 11)  Electromagnetic induction
 * 12)  Electromotive force
 * 13)  Lorentz force
 * 14)  Eddy current
 * 15)  Maxwell's equations

Magnetism (3 articles)

 * 1)  Magnetic field
 * 2)  Magnetostatics

Electrical circuits (9 articles)

 * 1)  Electric current
 * 2)  Electrical network
 * 3)  Electrical impedance
 * 4)  Electrical reactance
 * 5)  Electrical resistance and conductance
 * 6)  Capacitance
 * 7)  Ohm's law
 * 8)  Gain (electronics)
 * 9)  Inductance
 * 10)  Kirchhoff's circuit laws

Mechanics (76 articles)

 * 1)  Mechanics
 * 2)  Aerodynamics
 * 3)  Continuum mechanics
 * 4)  Dynamics
 * 5)  Kinematics
 * 6)  Relativistic mechanics
 * 7)  Soil mechanics
 * 8)  Statics
 * 9)  Oscillation
 * 10)  Harmonic oscillator
 * 11)  Simple harmonic motion

Classical mechanics (29 articles)

 * 1)  Classical mechanics (Level 3)
 * 2)  Hamiltonian mechanics
 * 3)  Lagrangian mechanics
 * 4)  Mass (Level 3)
 * 5)  Density
 * 6)  Momentum (Level 3)
 * 7)  Motion (Level 3)
 * 8)  Newton's laws of motion (Level 3)
 * 9)  Speed
 * 10)  Acceleration
 * 11)  Velocity
 * 12)  Equations of motion
 * 13)  Kinetic energy
 * 14)  Potential energy
 * 15)  Inertia
 * 16)  Moment of inertia
 * 17)  Friction
 * 18)  Impulse
 * 19)  Power
 * 20)  Work
 * 21)  Rotation
 * 22)  Angular momentum
 * 23)  Centripetal force
 * 24)  Coriolis force
 * 25)  Torque
 * 26)  Weight
 * 27)  Weighing scale
 * 28)  Frame of reference
 * 29)  Newton's law of universal gravitation

Fluid mechanics (14 articles)

 * 1)  Fluid mechanics
 * 2)  Bernoulli's principle
 * 3)  Buoyancy
 * 4)  Convection
 * 5)  Drag
 * 6)  Diffusion
 * 7)  Fluid dynamics
 * 8)  Lift (force)
 * 9)  Navier–Stokes equations
 * 10)  Osmosis
 * 11)  Reynolds number
 * 12)  Surface tension
 * 13)  Turbulence
 * 14)  Viscosity

Solid mechanics (10 articles)

 * 1)  Solid mechanics
 * 2)  Deformation
 * 3)  Elastic modulus
 * 4)  Elasticity
 * 5)  Fatigue
 * 6)  Hooke's law
 * 7)  Plasticity
 * 8)  Stiffness
 * 9)  Strength of materials
 * 10)  Stress (mechanics)

Quantum mechanics (11 articles)

 * 1)   Quantum mechanics (Level 3)
 * 2)  Pauli exclusion principle
 * 3)  Quantum chromodynamics
 * 4)  Quantum electrodynamics
 * 5)  Quantum entanglement
 * 6)  Quantum field theory
 * 7)  Quantum tunnelling
 * 8)   Schrödinger equation
 * 9)  Uncertainty principle
 * 10)  Wave function
 * 11)  Wave–particle duality

Statistical mechanics (1 article)

 * 1)  Statistical mechanics

Nuclear physics (10 articles)

 * 1)  Nuclear physics
 * 2)  Radioactive decay (Level 3)
 * 3)  Alpha particle
 * 4)  Beta particle
 * 5)  Gamma ray
 * 6)  Nuclear fission
 * 7)  Nuclear fusion
 * 8)  Tokamak
 * 9)  Fusion power
 * 10)  Isotope

Particle physics (35 articles)

 * 1)  Particle physics (Level 3)
 * 2)  Standard Model (Level 3)
 * 3)  Physics beyond the Standard Model
 * 4)   String theory
 * 5)  Supersymmetry
 * 6)  Particle
 * 7)  Particle accelerator
 * 8)  Large Hadron Collider
 * 9)  Tevatron
 * 10)  Particle detector
 * 11)  Cloud chamber
 * 12)  Scattering
 * 13)  Spin

Subatomic particles (19 articles)
Fermions (12 articles)
 * 1)  Subatomic particle (Level 3)
 * 1)  Fermion
 * 2)  Lepton
 * 3)  Electron (Level 3)
 * 4)  Muon
 * 5)  Tau
 * 6)  Neutrino
 * 7)  Quark
 * 8)  Hadron
 * 9)  Baryon
 * 10)  Neutron (Level 3)
 * 11)  Proton (Level 3)
 * 12)  Meson

Bosons (6 articles)
 * 1)  Boson
 * 2)  Gauge boson
 * 3)  Photon (Level 3)
 * 4)  Gluon
 * 5)  W and Z bosons
 * 6)  Higgs boson

Antimatter (3 articles)

 * 1)  Antimatter
 * 2)  Antiparticle
 * 3)  Positron

Theory of relativity (8 articles)

 * 1)  Theory of relativity (Level 3)
 * 2)  General relativity
 * 3)   Special relativity
 * 4)  Principle of relativity
 * 5)  Equivalence principle
 * 6)  Gravitational wave
 * 7)  Lorentz transformation
 * 8)  Michelson–Morley experiment

Thermodynamics (15 articles)

 * 1)   Thermodynamics (Level 3)
 * 2)  Heat (Level 3)
 * 3)  Temperature (Level 3)
 * 4)  Thermometer
 * 5)  Pressure
 * 6)  Laws of thermodynamics
 * 7)  Heat capacity
 * 8)  Heat transfer
 * 9)   Entropy
 * 10)  Enthalpy
 * 11)  Black-body radiation
 * 12)  Internal energy
 * 13)  Thermodynamic cycle
 * 14)  Thermodynamic free energy
 * 15)  Ideal gas law

Waves (17 articles)

 * 1)  Wave (Level 3)
 * 2)  Light (Level 3)
 * 3)  Speed of light (Level 3)
 * 4)  Acoustics
 * 5)   Sound (Level 3)
 * 6)  Speed of sound
 * 7)  Ultrasound
 * 8)  Amplitude
 * 9)  Frequency
 * 10)  Wavelength
 * 11)  Diffraction
 * 12)  Doppler effect
 * 13)  Interference
 * 14)  Noise
 * 15)  Resonance
 * 16)  Superposition principle
 * 17)  Wave equation

=Technology (754 articles)=

Basics (1 article)

 * 1)  Technology (Level 1)

Basics (2 articles)

 * 1)  Agricultural science
 * 2)  Farmer

Forms (12 articles)

 * 1)  Aquaculture
 * 2)  Beekeeping
 * 3)  Dairy
 * 4)  Extensive farming
 * 5)  Gardening
 * 6)  Intensive farming
 * 7)  Orchard
 * 8)  Organic farming
 * 9)  Sustainable agriculture
 * 10)  Permaculture
 * 11)  Subsistence agriculture
 * 12)  Urban agriculture

Buildings and infrastructure (6 articles)

 * 1) Garden (Level 3)
 * 2)  Farm
 * 3)  Barn
 * 4)  Stable
 * 5)  Silo
 * 6)  Granary

Animal husbandry (6 articles)

 * 1)  Animal husbandry (Level 3)
 * 2)  Domestication (Level 3)
 * 3)  Selective breeding
 * 4)  Breed
 * 5)  Livestock
 * 6)  Hay

Basics (3 articles)

 * 1)  Agronomy
 * 2)  Plant breeding
 * 3)  Cultivar

Horticultural techniques (5 articles)

 * 1)  Fertilizer (Level 3)
 * 2)  Harvest
 * 3)  Irrigation
 * 4)  Pesticide
 * 5)  Tillage

Biotechnology (6 articles)

 * 1)  Biotechnology (Level 3)
 * 2)  Genetic engineering (Level 3)
 * 3)  Genetically modified organism
 * 4)  Cloning
 * 5)  Gel electrophoresis
 * 6)   Polymerase chain reaction

Computing and information technology (73 articles)
For topics in theoretical computer science, see Mathematics: Discrete mathematics

Basics (8 articles)

 * 1)  Computing (Level 3)
 * 2)  Information technology
 * 3)  Abacus (Level 3)
 * 4)  Calculator
 * 5)  Computer security
 * 6)  Computer virus
 * 7)  Data
 * 8)  Data transmission

Computer science (5 articles)

 * 1)  Computer science (Level 3)
 * 2)  Artificial intelligence (Level 3)
 * 3)  Computer architecture
 * 4)  Computer simulation
 * 5)  Parallel computing

Computer hardware (10 articles)

 * 1)   Computer (Level 2)
 * 2)  Booting
 * 3)   Central processing unit
 * 4)  ENIAC
 * 5)  Motherboard

User interface (5 articles)

 * 1)  User interface
 * 2)  Computer keyboard
 * 3)  Computer monitor
 * 4)  Mouse (computing)
 * 5)  Touchscreen

Computer software (12 articles)

 * 1)  Software
 * 2)  Database
 * 3)  Open-source software
 * 4)  Spreadsheet
 * 5)  Web browser
 * 6)  Word processor

Operating systems (6 articles)

 * 1)  Operating system
 * 2)   Linux
 * 3)  Macintosh operating systems
 * 4)   Microsoft Windows
 * 5)  MS-DOS
 * 6)  Unix

Cryptography (4 articles)

 * 1)   Cryptography (Level 3)
 * 2)  Authentication
 * 3)  Encryption
 * 4)  Password

Data storage (10 articles)

 * 1)  Computer file
 * 2)  File system
 * 3)  Data storage device
 * 4)  Hard disk drive
 * 5)  Magnetic tape
 * 6)  Memory card
 * 7)  Optical disc
 * 8)  Random-access memory
 * 9)  Dynamic random-access memory
 * 10)  Read-only memory

Networks (12 articles)

 * 1)  Computer network
 * 2)  Email
 * 3)  Ethernet
 * 4)  Router
 * 5)  Wi-Fi

Internet (7 articles)

 * 1)  Internet (Level 3)
 * 2)  HTML
 * 3)  Hypertext Transfer Protocol
 * 4)  Internet protocol suite
 * 5)  Web search engine
 * 6)  Website
 * 7)   World Wide Web

Programming (12 articles)

 * 1)  Computer programming
 * 2)  Character encoding
 * 3)  Compiler
 * 4)   Programming language
 * 5)  Assembly language
 * 6)   C
 * 7)   Java (programming language)
 * 8)  JavaScript
 * 9)  Programming paradigm
 * 10)   Functional programming
 * 11)  Structured programming
 * 12)  Object-oriented programming

Basics (11 articles)

 * 1)  Electronics (Level 3)
 * 2)  Consumer electronics
 * 3)  Alternating current
 * 4)  Direct current
 * 5)  Magnet
 * 6)  Electromagnet
 * 7)  Semiconductor
 * 8)  Signal processing
 * 9)  Signal-to-noise ratio
 * 10)  Circuit design
 * 11)  Oscilloscope

Components (25 articles)

 * 1)  Semiconductor device (Level 3)
 * 2)  Transistor (Level 3)
 * 3)  Diode
 * 4)  Light-emitting diode
 * 5)  Integrated circuit (Level 3)
 * 6)  Battery (Level 3)
 * 7)   Amplifier
 * 8)  Antenna
 * 9)  Capacitor
 * 10)  Cavity magnetron
 * 11)  Electrical connector
 * 12)  Filter
 * 13)  Mechanical filter
 * 14)  Inductor
 * 15)  Power supply
 * 16)  Printed circuit board
 * 17)  Resistor
 * 18)  Switch
 * 19)  Circuit breaker
 * 20)  Fuse
 * 21)  Relay
 * 22)  Transformer
 * 23)  Vacuum tube
 * 24)  Waveguide
 * 25)  Wire

Basics (4 articles)

 * 1)  Engineering (Level 2)
 * 2)  Nanotechnology
 * 3)  Nuclear technology
 * 4)  Technical drawing

Disciplines (10 articles)

 * 1)  Mechanical engineering (Level 3)
 * 2)  Aerospace engineering
 * 3)  Architectural engineering
 * 4)  Biomedical engineering
 * 5)  Chemical engineering
 * 6)  Civil engineering
 * 7)   Electrical engineering
 * 8)  Industrial engineering
 * 9)  Military engineering
 * 10)  Software engineering

Industry (105 articles)
See also: "Industry" in Business and economics

Basics (12 articles)

 * 1)  Factory (Level 3)
 * 2)  Assembly line
 * 3)  Automation
 * 4)  Industrial robot
 * 5)  Interchangeable parts
 * 6)  Mass production
 * 7)  Mechanization
 * 8)  Standardization
 * 9)  Waste
 * 10)  Landfill
 * 11)  Recycling
 * 12)  Waste management

Energy and fuel (37 articles)

 * 1)  Fire (Level 2)
 * 2)  Candle
 * 3)  Charcoal
 * 4)  Fuel
 * 5)  Biofuel
 * 6)  Fossil fuel (Level 3)
 * 7)  Coal (Level 3)
 * 8)  Natural gas (Level 3)
 * 9)  Petroleum (Level 3)
 * 10)  Gasoline (Level 3)
 * 11)  Kerosene
 * 12)  Oil refinery
 * 13)  Oil well
 * 14)  Nuclear power (Level 3)
 * 15)  Renewable energy (Level 3)
 * 16)  Geothermal power
 * 17)  Hydropower (Level 3)
 * 18)  Hydroelectricity
 * 19)  Watermill
 * 20)  Solar energy (Level 3)
 * 21)  Solar power
 * 22)   Solar cell
 * 23)  Wind power (Level 3)
 * 24)   Windmill

Electricity generation and distribution (13 articles)
See also: Electromagnetism and Electromagnetism


 * 1)  Electric light (Level 3)
 * 2)  Incandescent light bulb
 * 3)  Electric power transmission
 * 4)  Electric power distribution
 * 5)  Electrical grid
 * 6)  Electricity generation
 * 7)  Electrification
 * 8)  Power station
 * 9)  Turbine
 * 10)  Gas turbine
 * 11)  Steam turbine
 * 12)  Wind turbine
 * 13)  Cooling tower

Food, water and health (18 articles)

 * 1)  Bleach
 * 2)  Desalination
 * 3)  Detergent
 * 4)  Laundry
 * 5)  Pasteurization (Level 3)
 * 6)  Refrigeration (Level 3)
 * 7)  Sanitation (Level 3)
 * 8)  Sanitary sewer
 * 9)  Sewage treatment
 * 10)  Water purification
 * 11)  Soap
 * 12)  Water supply network
 * 13)  Aqueduct
 * 14)  Plumbing
 * 15)  Qanat
 * 16)  Pumping station
 * 17)  Water tower
 * 18)  Water well

Material and chemical (19 articles)

 * 1)  Abrasive
 * 2)  Adhesive
 * 3)  Ceramic
 * 4)  Chemical plant
 * 5)  Composite material
 * 6)  Explosive material (Level 3)
 * 7)  Dynamite
 * 8)  Fireworks
 * 9)   Glass (Level 3)
 * 10)  Natural rubber (Level 3)
 * 11)  Paper (Level 3)
 * 12)  Papyrus
 * 13)  Petrochemical
 * 14)  Plastic (Level 3)
 * 15)  Pottery (Level 3)
 * 16)  Porcelain
 * 17)   Wood (Level 3)
 * 18)  Woodworking
 * 19)  Carpentry

Metallurgy (19 articles)

 * 1)  Metallurgy (Level 3)
 * 2)  Smelting
 * 3)  Metalworking
 * 4)  Die casting
 * 5)  Extrusion
 * 6)  Forging
 * 7)  Heat treating
 * 8)  Laser cutting
 * 9)  Rolling
 * 10)  Soldering
 * 11)  Steelmaking
 * 12)  Welding
 * 13)  Ore

Specific alloys (6 articles)

 * 1)  Brass
 * 2)  Bronze (Level 3)
 * 3)  Cast iron
 * 4)  Steel (Level 3)
 * 5)  Stainless steel
 * 6)  Wrought iron

Infrastructure (68 articles)
See also Arts: Architecture

Basics (2 articles)

 * 1)  Building
 * 2)  Infrastructure (Level 3)

Building materials (7 articles)

 * 1)  Brick
 * 2)  Cement
 * 3)  Concrete
 * 4)  Lumber
 * 5)  Masonry (Level 3)
 * 6)  Quarry
 * 7)  Scaffolding

Architectural elements (15 articles)

 * 1)  Arch (Level 3)
 * 2)  Ceiling
 * 3)  Column
 * 4)  Dome
 * 5)  Door
 * 6)  Elevator
 * 7)  Facade
 * 8)  Floor
 * 9)  Foundation
 * 10)  Lighting
 * 11)  Roof
 * 12)  Room
 * 13)  Stairs
 * 14)  Wall
 * 15)  Window

Coastal infrastructure (4 articles)

 * 1)  Harbor
 * 2)  Lighthouse
 * 3)  Pier
 * 4)  Port

Commercial buildings (2 articles)

 * 1)  Office
 * 2)  Warehouse

Residential buildings and housing units (11 articles)

 * 1)  Apartment
 * 2)  House (Level 2)
 * 3)  Hut
 * 4)  Igloo
 * 5)  Pagoda
 * 6)  Palace
 * 7)  Pyramid
 * 8)  Skyscraper
 * 9)  Tower (Level 3)
 * 10)  Tower block
 * 11)  Villa

Rooms and spaces (6 articles)

 * 1)  Bathroom
 * 2)  Bedroom
 * 3)  Dining room
 * 4)  Garage
 * 5)   Kitchen
 * 6)  Living room

Portable buildings and shelters (2 articles)

 * 1)  Tent
 * 2)  Yurt

Other components (2 articles)

 * 1)  Electrical wiring
 * 2)  HVAC

Hydraulic infrastructure (10 articles)

 * 1)  Drainage
 * 2)  Dam (Level 3)
 * 3)  Aswan Dam
 * 4)  Hoover Dam
 * 5)  Itaipu Dam
 * 6)  Three Gorges Dam
 * 7)  Flood control
 * 8)  Flood control in the Netherlands
 * 9)  Levee
 * 10)  Reservoir

Transport infrastructure (7 articles)

 * 1)  Bridge (Level 3)
 * 2)  Akashi Kaikyō Bridge
 * 3)  Brooklyn Bridge
 * 4)  Golden Gate Bridge
 * 5)  London Bridge
 * 6)  Tunnel
 * 7)  Channel Tunnel

Basics (20 articles)

 * 1)  Machine
 * 2)  Crane (machine)
 * 3)  Engine (Level 3)
 * 4)  Electric motor (Level 3)
 * 5)  Internal combustion engine (Level 3)
 * 6)  Diesel engine
 * 7)  Four-stroke engine
 * 8)   Jet engine (Level 3)
 * 9)  Steam engine (Level 3)
 * 10)  Robotics
 * 11)   Robot (Level 3)
 * 12)  Simple machine (Level 3)
 * 13)  Inclined plane
 * 14)  Lever
 * 15)  Pulley
 * 16)  Screw (simple machine)
 * 17)  Wedge
 * 18)  Wheel (Level 3)
 * 19)  Wheel and axle
 * 20)   System

Components (19 articles)

 * 1)  Axle
 * 2)  Bearing
 * 3)  Clutch
 * 4)  Gear
 * 5)  Cable
 * 6)  Chain
 * 7)  Rope
 * 8)  Fastener
 * 9)  Knot
 * 10)  Nail (fastener)
 * 11)  Nut (hardware)
 * 12)  Rivet
 * 13)  Washer
 * 14)  Lock (security device)
 * 15)  Key
 * 16)  Pipe
 * 17)  Gasket
 * 18)  Valve
 * 19)  Spring (device)

Tools (29 articles)

 * 1)  Tool (Level 2)

Artist's tools (8 articles)

 * 1)  Ink
 * 2)  Modelling clay
 * 3)  Paint
 * 4)  Brush
 * 5)  Pastel
 * 6)  Pencil
 * 7)   Pigment
 * 8)  Pen

Containers (1 article)

 * 1)  Bag

Hand tools (8 articles)

 * 1)  Axe
 * 2)  Chisel
 * 3)  Clamp
 * 4)  Drilling
 * 5)  Hammer
 * 6)  Plane (tool)
 * 7)  Saw
 * 8)  Scissors

Agricultural tools (11 articles)

 * 1)  Archimedes' screw
 * 2)  Harrow (tool)
 * 3)  Hoe (tool)
 * 4)  Machete
 * 5)  Pitchfork
 * 6)  Plough
 * 7)  Rake (tool)
 * 8)  Roller (agricultural tool)
 * 9)  Scythe
 * 10)  Sickle
 * 11)  Shovel

Farm and garden machinery (6 articles)

 * 1)  Chainsaw
 * 2)  Combine harvester
 * 3)  Cotton gin
 * 4)  Cultivator
 * 5)  Irrigation sprinkler
 * 6)  Lawn mower

Household appliances (16 articles)

 * 1)  Home appliance
 * 2)  Air conditioning
 * 3)  Clothes dryer
 * 4)  Dishwasher
 * 5)  Furnace
 * 6)  Ironing
 * 7)  Microwave oven
 * 8)  Oven
 * 9)  Refrigerator
 * 10)  Sewing machine
 * 11)  Sink
 * 12)  Stove (Level 3)
 * 13)  Electric stove
 * 14)  Toilet
 * 15)  Vacuum cleaner
 * 16)  Washing machine

Industrial machinery (4 articles)

 * 1)  Lathe
 * 2)  Loom
 * 3)  Machine press
 * 4)  Potter's wheel

Media and communication (36 articles)
See also Arts: Literature; Society: Mass media; and Technology: Computing and information technology


 * 1)  Broadcasting (Level 3)
 * 2)  Cathode ray tube
 * 3)  Communications satellite
 * 4)  Flat panel display
 * 5)  Liquid-crystal display
 * 6)  Image scanner
 * 7)   Mail (Level 3)
 * 8)  Courier
 * 9)  Postage stamp
 * 10)  Mobile phone (Level 3)
 * 11)  Smartphone
 * 12)  Printing (Level 3)
 * 13)  Photocopier
 * 14)  Printer
 * 15)  Printing press
 * 16)  Radio (Level 3)
 * 17)  Amateur radio
 * 18)  Radio broadcasting
 * 19)  Social media
 * 20)  Blog
 * 21)  Sound recording and reproduction
 * 22)  Loudspeaker
 * 23)  Microphone
 * 24)   Speech synthesis
 * 25)  Telecommunication (Level 3)
 * 26)  Modulation
 * 27)  Telegraphy
 * 28)  Telephone (Level 3)
 * 29)   Television (Level 3)
 * 30)  Cable television
 * 31)  Remote control
 * 32)  Satellite television
 * 33)  Text messaging
 * 34)   Typewriter
 * 35)  Video (Level 3)
 * 36)  Video camera

Facilities (3 articles)

 * 1)  Hospital (Level 3)
 * 2)  Emergency department
 * 3)  Ambulance

Imaging (4 articles)

 * 1)  Medical imaging (Level 3)
 * 2)  Magnetic resonance imaging
 * 3)  Medical ultrasonography
 * 4)  Radiography

Devices (3 articles)

 * 1)  Artificial organ
 * 2)  Prosthesis
 * 3)  Wheelchair

Techniques (2 articles)

 * 1)  Cardiopulmonary bypass
 * 2)  Dialysis

Diagnostic technologies (3 articles)

 * 1)  DNA profiling
 * 2)  Electrocardiography
 * 3)  Endoscopy

Military technology (67 articles)

 * 1)  Military technology
 * 2)   Horses in warfare
 * 3)  Stealth technology
 * 4)   War elephant
 * 5)  Weapon (Level 3)

Ammunition (2 articles)

 * 1)  Ammunition
 * 2)  Gunpowder (Level 3)

Armour (7 articles)

 * 1)  Armour
 * 2)  Bulletproof vest
 * 3)  Helmet
 * 4)  Mail (armour)
 * 5)  Plate armour
 * 6)  Shield
 * 7)   Tank (Level 3)

Explosive weapons (6 articles)

 * 1)  Bomb
 * 2)  Cluster munition
 * 3)  Improvised explosive device
 * 4)  Grenade
 * 5)  Land mine
 * 6)  Missile

Incendiary weapons (2 articles)

 * 1)  Greek fire
 * 2)  Napalm

Melee weapons (9 articles)

 * 1)  Battle axe
 * 2)  Bayonet
 * 3)  Club (weapon)
 * 4)  Dagger
 * 5)  Katana
 * 6)  Knife (Level 3)
 * 7)  Rapier
 * 8)  Spear
 * 9)  Sword (Level 3)

Military aviation (4 articles)

 * 1)  Military aircraft
 * 2)  Attack aircraft
 * 3)  Bomber
 * 4)  Fighter aircraft

Naval warfare (8 articles)

 * 1)   Aircraft carrier
 * 2)  Battleship
 * 3)  Galley
 * 4)  Naval mine
 * 5)  Ship of the line
 * 6)   Submarine (Level 3)
 * 7)  Torpedo
 * 8)  Warship

Projectile weapons (12 articles)

 * 1)  Ballistics
 * 2)  Boomerang
 * 3)  Bow and arrow (Level 3)
 * 4)   Crossbow
 * 5)  Firearm (Level 3)
 * 6)  Assault rifle
 * 7)  Handgun
 * 8)  Machine gun
 * 9)  Musket
 * 10)  Rifle
 * 11)  Shotgun
 * 12)  Sling

Artillery and siege (7 articles)

 * 1)  Artillery (Level 3)
 * 2)  Ballista
 * 3)  Battering ram
 * 4)  Cannon
 * 5)  Catapult
 * 6)  Howitzer
 * 7)  Mortar

Weapon of mass destruction (5 articles)

 * 1)  Weapon of mass destruction
 * 2)  Biological warfare
 * 3)  Chemical weapon
 * 4)   Nuclear weapon (Level 3)
 * 5)  Thermonuclear weapon

Navigation and timekeeping (23 articles)
For units of time (hour, day, etc.), see Physical sciences – Measurement.


 * 1)  Calendar (Level 3)
 * 2)  Chinese calendar
 * 3)  Gregorian calendar
 * 4)  Islamic calendar
 * 5)  Julian calendar
 * 6)  Leap year
 * 7)  Clock (Level 3)
 * 8)  Watch
 * 9)  Atomic clock
 * 10)  Sundial
 * 11)  Time zone
 * 12)  Daylight saving time
 * 13)  Pendulum (Level 3)
 * 14)  Navigation (Level 3)
 * 15)  Compass (Level 3)
 * 16)  Global Positioning System (Level 3)
 * 17)  Cardinal direction
 * 18)  Celestial navigation
 * 19)  Sextant
 * 20)  Dead reckoning
 * 21)  Gyroscope
 * 22)   Radar (Level 3)
 * 23)  Sonar

Basics (3 articles)

 * 1)  Laser (Level 3)
 * 2)  Holography
 * 3)   Optical fiber

Optics (9 articles)

 * 1)  Lens (Level 3)
 * 2)  Fresnel lens
 * 3)  Anti-reflective coating
 * 4)  Diffraction grating
 * 5)  Focal length
 * 6)  Focus
 * 7)  Mirror
 * 8)  Polarizer
 * 9)  Prism

Optical instruments (16 articles)

 * 1)  Microscope (Level 3)
 * 2)  Electron microscope
 * 3)  Optical microscope
 * 4)  Telescope (Level 3)
 * 5)  Optical telescope
 * 6)  Radio telescope
 * 7)  Theodolite
 * 8)  Camera (Level 3)
 * 9)  Photography (Level 3)
 * 10)  Digital photography
 * 11)  Photographic film
 * 12)   Glasses
 * 13)  Binoculars
 * 14)  Charge-coupled device
 * 15)  Interferometry
 * 16)  Photometer

Basics (10 articles)

 * 1)  Spaceflight (Level 3)
 * 2)  Rocket (Level 3)
 * 3)  Launch pad
 * 4)  Launch vehicle
 * 5)  Rocket engine
 * 6)  Satellite (Level 3)
 * 7)  Astronaut
 * 8)  Space capsule
 * 9)  Space probe
 * 10)  Space station

Space travel (6 articles)

 * 1)  Orbital mechanics
 * 2)  Escape velocity
 * 3)  Geostationary orbit
 * 4)  Geosynchronous orbit
 * 5)  Gravity assist
 * 6)  Low Earth orbit

Programs and launch sites (9 articles)

 * 1)  NASA
 * 2)  Apollo program
 * 3)  Moon landing (Level 3)
 * 4)  Kennedy Space Center
 * 5)  Soviet space program
 * 6)  Baikonur Cosmodrome
 * 7)  Russian Federal Space Agency
 * 8)  European Space Agency
 * 9)  China National Space Administration

Manned vehicles (5 articles)

 * 1)    International Space Station (Level 3)
 * 2)  Mir
 * 3)  Space Shuttle
 * 4)   Saturn V
 * 5)  Soyuz (spacecraft)

Unmanned spacecraft (6 articles)

 * 1)  Hubble Space Telescope (Level 3)
 * 2)  Spitzer Space Telescope
 * 3)  Herschel Space Observatory
 * 4)  Sputnik 1
 * 5)  Voyager 1
 * 6)  Exploration of Mars

Ground-based observatories (2 articles)

 * 1)  Atacama Large Millimeter Array
 * 2)  Mauna Kea Observatories

Fabrics and fibers (15 articles)

 * 1)  Textile (Level 3)
 * 2)  Canvas
 * 3)  Cotton
 * 4)  Felt
 * 5)  Fiber
 * 6)  Jute
 * 7)  Lace
 * 8)  Leather
 * 9)  Linen
 * 10)  Nylon
 * 11)  Polyester
 * 12)  Silk
 * 13)  Thread
 * 14)  Wool
 * 15)  Yarn

Techniques (12 articles)

 * 1)  Basket weaving
 * 2)  Crochet
 * 3)  Dyeing
 * 4)  Dye
 * 5)  Embroidery
 * 6)  Hand spinning
 * 7)  Knitting
 * 8)  Macramé
 * 9)  Quilting
 * 10)  Sewing
 * 11)  Tapestry
 * 12)  Weaving

Basics (5 articles)

 * 1)  Transport (Level 2)
 * 2)  Public transport
 * 3)  Travel
 * 4)  Passport
 * 5)  Vehicle

Road transport (21 articles)

 * 1)  Road (Level 3)
 * 2)  Highway
 * 3)  Controlled-access highway
 * 4)  Trail
 * 5)  Car (Level 3)
 * 6)    Bicycle (Level 3)
 * 7)  Cycling
 * 8)  Motorcycle
 * 9)  Truck
 * 10)  Pickup truck
 * 11)  Sport utility vehicle
 * 12)  Van
 * 13)  Minivan
 * 14)  Bus
 * 15)  Trolleybus
 * 16)  Taxicab
 * 17)  Driving
 * 18)  Parking
 * 19)  Tire
 * 20)   Filling station
 * 21)  Traffic collision

Rail transport (15 articles)

 * 1)  Rail transport (Level 3)
 * 2)  Track (rail transport)
 * 3)  Train
 * 4)  Locomotive
 * 5)  Steam locomotive
 * 6)  Train station
 * 7)   Rapid transit
 * 8)   London Underground
 * 9)  New York City Subway
 * 10)  High-speed rail
 * 11)  Shinkansen
 * 12)  Monorail
 * 13)  Tram
 * 14)  Funicular
 * 15)   Trans-Siberian Railway

Animal-powered transport (4 articles)

 * 1)  Carriage
 * 2)  Cart
 * 3)  Chariot
 * 4)  Stagecoach

Other (6 articles)

 * 1)  Cable transport
 * 2)  Aerial tramway
 * 3)  Baby transport
 * 4)  Pipeline transport
 * 5)  Rickshaw
 * 6)  Tractor

Naval transport (21 articles)

 * 1)  Ship (Level 3)
 * 2)  Canal (Level 3)
 * 3)  Lock (water navigation)
 * 4)  Barge
 * 5)  Boat
 * 6)  Canoe
 * 7)  Caravel
 * 8)  Container ship
 * 9)  Ferry
 * 10)  Fishing vessel
 * 11)  Hovercraft
 * 12)  Junk
 * 13)  Merchant vessel
 * 14)  Naval architecture
 * 15)  Passenger ship
 * 16)  Riverboat
 * 17)  Sail
 * 18)  Sailing
 * 19)  Shipbuilding
 * 20)  Steamboat
 * 21)  Tanker

Aviation (17 articles)

 * 1)  Aircraft (Level 3)
 * 2)  Aviation
 * 3)  Air traffic control
 * 4)  Aircraft engine
 * 5)  Airfoil
 * 6)  Airline
 * 7)  Airplane
 * 8)  Airport
 * 9)   Airship
 * 10)  Balloon (aeronautics)
 * 11)  Fixed-wing aircraft
 * 12)  Flight
 * 13)  Glider
 * 14)  Helicopter
 * 15)  Jet aircraft
 * 16)  Parachute
 * 17)  Unmanned aerial vehicle

=Mathematics (298 articles)=
 * See also: People: Mathematicians

Basics (56 articles)

 * 1)   Mathematics (Level 1)
 * 2)  Mathematician
 * 3)  Arithmetic (Level 2)
 * 4)  Addition (Level 3)
 * 5)  Subtraction (Level 3)
 * 6)  Multiplication (Level 3)
 * 7)  Division (Level 3)
 * 8)  Euclidean algorithm
 * 9)  Fraction (Level 3)
 * 10)  Percentage
 * 11)  Modular arithmetic
 * 12)  Number (Level 2)
 * 13)  Natural number (Level 3)
 * 14)  Integer (Level 3)
 * 15)  Real number (Level 3)
 * 16)  Complex number (Level 3)
 * 17)  Rational number
 * 18)  Irrational number
 * 19)  Imaginary number
 * 20)  Function (Level 3)
 * 21)  Exponentiation (Level 3)
 * 22)  Logarithm (Level 3)
 * 23)  nth root (Level 3)
 * 24)  Square root
 * 25)  Exponential function
 * 26)  Inverse function
 * 27)  Implicit function
 * 28)  Function composition
 * 29)  Graph of a function
 * 30)  Parametric equation
 * 31)  Equation (Level 3)
 * 32)  Series (Level 3)
 * 33)  Equation solving
 * 34)  Polynomial
 * 35)   Quadratic equation
 * 36)  Variable (Level 3)
 * 37)  Constant
 * 38)  $\pi$ (Level 3)
 * 39)  $e$ (Level 3)
 * 40)  0 (Level 3)
 * 41)  1
 * 42)  −1
 * 43)  Imaginary unit
 * 44)  Golden ratio
 * 45)  Positional notation
 * 46)  Numerical digit
 * 47)  Decimal
 * 48)  Arabic numerals
 * 49)  Roman numerals
 * 50)  Binary number
 * 51)  Formula
 * 52)  Theorem
 * 53)  Conjecture
 * 54)  Factorial
 * 55)  Gamma function
 * 56)  Hilbert's problems

Geometry (61 articles)

 * 1)  Geometry (Level 2)
 * 2)  Coordinate system (Level 3)
 * 3)  Cartesian coordinate system
 * 4)  Polar coordinate system
 * 5)  Dimension (Level 3)
 * 6)  Point
 * 7)  Line (Level 3)
 * 8)  Two-dimensional space
 * 9)  Plane (Level 3)
 * 10)  Angle (Level 3)
 * 11)  Right angle
 * 12)  Area (Level 3)
 * 13)  Shape (Level 3)
 * 14)  Polygon (Level 3)
 * 15)    Triangle (Level 3)
 * 16)  Quadrilateral
 * 17)  Square
 * 18)  Conic section (Level 3)
 * 19)  Circle (Level 3)
 * 20)  Ellipse
 * 21)  Parabola
 * 22)  Hyperbola
 * 23)  Three-dimensional space
 * 24)  Volume (Level 3)
 * 25)  Sphere (Level 3)
 * 26)  Polyhedron (Level 3)
 * 27)  Cube
 * 28)  Trigonometry (Level 3)
 * 29)   Trigonometric functions
 * 30)  Inverse trigonometric functions
 * 31)  Hyperbolic function
 * 32)  Topology (Level 3)
 * 33)  General topology
 * 34)  Topological space
 * 35)  Compact space
 * 36)  Manifold
 * 37)  Open set
 * 38)  Homology
 * 39)  Homotopy
 * 40)  Euler characteristic
 * 41)  Knot theory
 * 42)  Poincaré conjecture
 * 43)  Length
 * 44)  Ruler
 * 45)  Calipers
 * 46)  Distance
 * 47)  Metric space
 * 48)  Symmetry
 * 49)  Symmetry in mathematics
 * 50)  Analytic geometry
 * 51)  Differential geometry
 * 52)  Atiyah–Singer index theorem
 * 53)  Riemannian geometry
 * 54)   Euclidean geometry
 * 55)  Euclidean space
 * 56)  Convex set
 * 57)   Pythagorean theorem
 * 58)  Non-Euclidean geometry
 * 59)   Fractal
 * 60)  Tensor
 * 61)  Tessellation

Algebra (39 articles)

 * 1)  Algebra (Level 3)
 * 2)  Elementary algebra
 * 3)   Linear algebra
 * 4)  Linear equation
 * 5)  Gaussian elimination
 * 6)  Matrix
 * 7)  Determinant
 * 8)   Eigenvalues and eigenvectors
 * 9)  Vector space
 * 10)  Euclidean vector
 * 11)  Cross product
 * 12)  Dot product
 * 13)  Algebraic geometry
 * 14)  Algebraic variety
 * 15)  Boolean algebra
 * 16)  Inequality
 * 17)  Abstract algebra
 * 18)  Algebraic topology
 * 19)  Sheaf
 * 20)  Associative property
 * 21)  Commutative algebra
 * 22)  Commutative property
 * 23)  Distributive property
 * 24)  Field (mathematics)
 * 25)  Fundamental theorem of algebra
 * 26)  Galois theory
 * 27)  Group
 * 28)  Abelian group
 * 29)  Classification of finite simple groups
 * 30)  Fundamental group
 * 31)  Group representation
 * 32)  Group theory
 * 33)  Homological algebra
 * 34)  Isomorphism
 * 35)  Module
 * 36)  Representation theory
 * 37)  Ring theory
 * 38)  Commutative ring
 * 39)  Ring

Statistics and probability (40 articles)

 * 1)   Statistics (Level 2)
 * 2)  Bayesian inference
 * 3)  Correlation and dependence
 * 4)  Regression
 * 5)  Least squares
 * 6)  Data visualization
 * 7)  Design of experiments
 * 8)  Randomized controlled trial
 * 9)  Mean
 * 10)  Median
 * 11)  Meta-analysis
 * 12)  Mode
 * 13)  Observational study
 * 14)  Sample mean and covariance
 * 15)  Standard deviation
 * 16)  Standard error
 * 17)  Statistical hypothesis testing
 * 18)  p-value
 * 19)  Chi-squared test
 * 20)  Student's t-test
 * 21)  Survey methodology
 * 22)  Statistical population
 * 23)  Sampling
 * 24)  Probability (Level 3)
 * 25)   Probability theory
 * 26)  Bayes' theorem
 * 27)  Central limit theorem
 * 28)  Expected value
 * 29)  Law of large numbers
 * 30)  Markov chain
 * 31)  Probability density function
 * 32)  Probability distribution
 * 33)  Binomial distribution
 * 34)  Exponential distribution
 * 35)  Normal distribution
 * 36)  Poisson distribution
 * 37)  Discrete uniform distribution
 * 38)  Random variable
 * 39)  Stochastic process
 * 40)  Variance

Discrete mathematics (37 articles)
For topics in applied computer science, see Technology: Computing and information technology


 * 1)  Discrete mathematics
 * 2)  Mathematical logic
 * 3)  Mathematical proof (Level 3)
 * 4)  Axiom
 * 5)  Computability theory
 * 6)  Computable function
 * 7)   Gödel's incompleteness theorems
 * 8)  Mathematical induction
 * 9)  Propositional calculus
 * 10)  Combinatorics (Level 3)
 * 11)  Combination
 * 12)  Permutation
 * 13)  Theoretical computer science
 * 14)    Algorithm (Level 3)
 * 15)  Abstract machine
 * 16)  Numerical integration
 * 17)  Coding theory
 * 18)  Data compression
 * 19)  Error detection and correction
 * 20)   Computational complexity theory
 * 21)  P versus NP problem
 * 22)  Data structure
 * 23)  Formal language
 * 24)  Theory of computation
 * 25)  Set theory
 * 26)  Set (Level 3)
 * 27)  Empty set
 * 28)  Subset
 * 29)  Axiom of choice
 * 30)  Cantor's theorem
 * 31)  Equivalence relation
 * 32)  Intersection (set theory)
 * 33)  Naive set theory
 * 34)  Russell's paradox
 * 35)  Union (set theory)
 * 36)  Graph theory
 * 37)  Graph (discrete mathematics)

Calculus and analysis (39 articles)

 * 1)   Calculus (Level 3)
 * 2)  Limit (Level 3)
 * 3)  Infinity (Level 3)
 * 4)  Limit of a function
 * 5)  Limit of a sequence
 * 6)  Sequence
 * 7)  Fibonacci number
 * 8)  Fundamental theorem of calculus
 * 9)  Differential calculus
 * 10)  Derivative
 * 11)  Differential equation
 * 12)  Ordinary differential equation
 * 13)  Integral
 * 14)  Laplace transform
 * 15)  Multivariable calculus
 * 16)  Multiple integral
 * 17)  Partial derivative
 * 18)  Laplace's equation
 * 19)  Partial differential equation
 * 20)  Vector calculus
 * 21)  Del
 * 22)  Taylor series
 * 23)   Mathematical analysis (Level 3)
 * 24)  Approximation theory
 * 25)  Numerical analysis
 * 26)  Complex analysis
 * 27)  Cauchy's integral formula
 * 28)  Euler's formula
 * 29)  Euler's identity
 * 30)  Holomorphic function
 * 31)  Riemann surface
 * 32)  Functional analysis
 * 33)  Hilbert space
 * 34)  Harmonic analysis
 * 35)  Fourier analysis
 * 36)  Fourier series
 * 37)  Fourier transform
 * 38)  Real analysis
 * 39)  Calculus of variations

Other (26 articles)

 * 1)  Number theory (Level 3)
 * 2)  Prime number (Level 3)
 * 3)  Prime number theorem
 * 4)  Euclid's theorem
 * 5)  Algebraic number theory
 * 6)  Algebraic number field
 * 7)  Class field theory
 * 8)  Analytic number theory
 * 9)   Riemann hypothesis
 * 10)  Diophantine equation
 * 11)  Fermat's Last Theorem
 * 12)  Fundamental theorem of arithmetic
 * 13)  Applied mathematics
 * 14)  Mathematical optimization (Level 3)
 * 15)  Linear programming
 * 16)  Nonlinear programming
 * 17)  Operations research
 * 18)   Game theory
 * 19)  Information theory
 * 20)  Dynamical systems theory
 * 21)  Dynamical system
 * 22)  Linear dynamical system
 * 23)  Nonlinear system
 * 24)  Control theory
 * 25)  Category theory
 * 26)  Pure mathematics