chromogen vs chemical compound

chromogen and chemical compound both are nouns.

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

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

chromogen: a compound that can be converted to a pigment
chemical compound: (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

Other hypernyms of chromogen include compound.

chromogen (noun)	chemical compound (noun)
a compound that can be converted to a pigment	(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight