User:Sk Tanbir Islam/sandbox

Chapter-1 Secret means something that is meant to be kept unknown or unseen by others.In our whole world maximum object has a secret part.Chapter-2 A library is a storehouse of knowledge.From a library we can known much information about mathematics,physics,chemistry,biology, history ,geography,astronomy etc.A library always gives us the true information.But there is a noticable thing for the writers.And that is the (copy right law).'Maktaba' is the Arabic word of library.'Biblioteka' is the Russian word of library.'Vivliothiki'is the Greek word of library.'Libarary'is the Urdu word of library.'Pathagar' is the Bengali word of library. Chapter-3 Sector Based Name 1.Component-This type of name used in electronics.There are many kinds of component,such as resistor,IC,capacitor,diode etc. 2.Equipments-This type of name used in Chemistry lab.The component and equipment nearly same.There are many kinds of equipments such as burner,beaker,testube,stand,flask bottle etc. 3.Instrument-This type of name used in various field.Generally used in the field of Mathematics and Geometry.Such as pencil,eraser,scale,calculator,slide calipers,screw gauge etc. 4.Materials-This type of name used in various field.That means denoting or consisting of physical objects rather than the mind or spirit.When we go to make something we need many kinds of (things) then we called them materials. 5.Tools-This type of name used in general sections.That means a device or implement especially one held in the hand used to carry out a particular function.Such as gardening tools,hammer,tester,blade,screw driver,wrench etc. 6.Device-This type of name used in daily purposes. The another name of device is machine.Such as mobile,router,modem,clock etc. 7.Element-This type of name used in everywhere.