propyl radical vs propyl group

propyl radical and propyl group both are nouns.

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

As nouns, propyl radical and propyl group are synonyms defined as:

propyl radical and propyl group: the monovalent organic group C3H7- obtained from propane

Other synonyms of propyl radical include propyl.

propyl radical (noun)	propyl group (noun)
the monovalent organic group C3H7- obtained from propane	the monovalent organic group C3H7- obtained from propane