amyl vs chemical group

amyl and chemical group both are nouns.

Word	Noun	Adjective	Verb	Adverb
amyl	Yes	No	No	No
chemical group	Yes	No	No	No

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

amyl: a hydrocarbon radical that occurs in many organic compounds
chemical group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Other hypernyms of amyl include group, radical.

amyl (noun)	chemical group (noun)
a hydrocarbon radical that occurs in many organic compounds	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule