ethyl radical vs ethyl

ethyl radical and ethyl both are nouns.

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

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

ethyl radical and ethyl: the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom

Other synonyms of ethyl radical include ethyl group.

ethyl radical (noun)	ethyl (noun)
the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom	the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom