methyl radical vs methyl group

methyl radical and methyl group both are nouns.

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

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

methyl radical and methyl group: the univalent radical CH3- derived from methane

Other synonyms of methyl radical include methyl.

methyl radical (noun)	methyl group (noun)
the univalent radical CH3- derived from methane	the univalent radical CH3- derived from methane