methyl group vs methyl radical

methyl group and methyl radical both are nouns.

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

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

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

Other synonyms of methyl group include methyl.

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