phenylethylene vs vinylbenzene

phenylethylene and vinylbenzene both are nouns.

Word	Noun	Adjective	Verb	Adverb
phenylethylene	Yes	No	No	No
vinylbenzene	Yes	No	No	No

As nouns, phenylethylene and vinylbenzene are synonyms defined as:

phenylethylene and vinylbenzene: a colorless oily liquid; the monomer for polystyrene

Other synonyms of phenylethylene include cinnamene, styrene.

phenylethylene (noun)	vinylbenzene (noun)
a colorless oily liquid; the monomer for polystyrene	a colorless oily liquid; the monomer for polystyrene