allyl vs chemical group

allyl and chemical group both are nouns.

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

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

allyl: the univalent unsaturated organic radical C3H5; derived from propylene
chemical group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Other hypernyms of allyl include group, radical.

allyl (noun)	chemical group (noun)
the univalent unsaturated organic radical C3H5; derived from propylene	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule