monomer vs chemical compound

monomer and chemical compound both are nouns.

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

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

monomer: a simple compound whose molecules can join together to form polymers
chemical compound: (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

Other hypernyms of monomer include compound.

monomer (noun)	chemical compound (noun)
a simple compound whose molecules can join together to form polymers	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight