vinyl cyanide vs propenonitrile

vinyl cyanide and propenonitrile both are nouns.

Word	Noun	Adjective	Verb	Adverb
vinyl cyanide	Yes	No	No	No
propenonitrile	Yes	No	No	No

As nouns, vinyl cyanide and propenonitrile are synonyms defined as:

vinyl cyanide and propenonitrile: a colorless liquid unsaturated nitrile made from propene

Other synonyms of vinyl cyanide include acrylonitrile.

vinyl cyanide (noun)	propenonitrile (noun)
a colorless liquid unsaturated nitrile made from propene	a colorless liquid unsaturated nitrile made from propene