propyl vs chemical group

propyl and chemical group both are nouns.

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

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

propyl: the monovalent organic group C3H7- obtained from propane
chemical group: (chemistry) two or more atoms bound together as a single unit and forming part of a molecule

Other hypernyms of propyl include group, radical.

propyl (noun)	chemical group (noun)
the monovalent organic group C3H7- obtained from propane	(chemistry) two or more atoms bound together as a single unit and forming part of a molecule