User:Cubellod/Morpheme

Allomorphs
Allomorphs are variants of a morpheme that differ in form but are semantically similar. For example, the English plural marker has three allomorphs: (bugs),  (bats), or  (buses). An allomorph is a concrete realization of a morpheme, which is an abstract unit. That is parallel to the relation of an allophone and a phoneme.

Zero-morpheme
A zero-morpheme is a type of morpheme that carries semantic meaning but is not represented by auditory phoneme. A word with a zero-morpheme is analyzed as having the morpheme for grammatical purposes, but the morpheme is not realized in speech. They are often represented by /∅/ within glosses.