allomorph vs chemical compound

allomorph and chemical compound both are nouns.

Word	Noun	Adjective	Verb	Adverb
allomorph	Yes	No	No	No
chemical compound	Yes	No	No	No

As nouns, chemical compound is a hypernym of allomorph; that is, chemical compound is a word with a broader meaning than allomorph:

allomorph: any of several different crystalline forms of the same chemical compound
chemical compound: (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

Other hypernyms of allomorph include compound.

allomorph (noun)	chemical compound (noun)
a variant phonological representation of a morpheme	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
any of several different crystalline forms of the same chemical compound