alkyl radical vs alkyl

alkyl radical and alkyl both are nouns.

Word	Noun	Adjective	Verb	Adverb
alkyl radical	Yes	No	No	No
alkyl	Yes	No	No	No

As nouns, alkyl radical and alkyl are synonyms defined as:

alkyl radical and alkyl: any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons

Other synonyms of alkyl radical include alkyl group.

alkyl radical (noun)	alkyl (noun)
any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons	any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons