MORPHOLOGY

 This is a study dealing with structure of words.

Is study of structure and function of the minimal meaningful unit of utterence and they combine to form words

MORPHEME

Is a minimal grammatical form which can not be father broken down into any more grammatics structure (parts). or

Is the smallest meaningfull unit of word that can not  be segmented. 

For example the English waord "kind" is a morpheme which is only one morpheme 

 ALLOMORPH

Is a variant of morpheme is different form of morpheme .Example 

1.  Plural morpheme (s) has a number of phonological variant depending on the environment in which it appears as :

Negative morphemes : which stand for "not" as un has its variants depending on the situation of waords through which it occurs .Example 

Zero Allomorph is the situation where by wods does not take s for plural eg sneep=sleep

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