propyl group vs propyl radical

propyl group and propyl radical both are nouns.

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

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

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

Other synonyms of propyl group include propyl.

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