methyl group vs methyl

methyl group and methyl both are nouns.

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

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

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

Other synonyms of methyl group include methyl radical.

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