propenonitrile vs vinyl cyanide

propenonitrile and vinyl cyanide both are nouns.

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

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

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

Other synonyms of propenonitrile include acrylonitrile.

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