vinyl radical vs vinyl

vinyl radical and vinyl both are nouns.

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

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

vinyl radical and vinyl: a univalent chemical radical derived from ethylene

Other synonyms of vinyl radical include vinyl group.

vinyl radical (noun)	vinyl (noun)
a univalent chemical radical derived from ethylene	a univalent chemical radical derived from ethylene
	shiny and tough and flexible plastic; used especially for floor coverings