propenonitrile vs cyanide

propenonitrile and cyanide both are nouns.

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

As nouns, cyanide is a hypernym of propenonitrile; that is, cyanide is a word with a broader meaning than propenonitrile:

propenonitrile: a colorless liquid unsaturated nitrile made from propene
cyanide: any of a class of organic compounds containing the cyano radical -CN

Other hypernyms of propenonitrile include nitril, nitrile.

propenonitrile (noun)	cyanide (noun)
a colorless liquid unsaturated nitrile made from propene	an extremely poisonous salt of hydrocyanic acid
	any of a class of organic compounds containing the cyano radical -CN