nitril vs acrylonitrile

nitril and acrylonitrile both are nouns.

Word	Noun	Adjective	Verb	Adverb
nitril	Yes	No	No	No
acrylonitrile	Yes	No	No	No

As nouns, acrylonitrile is a hyponym of nitril; that is, acrylonitrile is a word with a more specific, narrower meaning than nitril:

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

Other hyponyms of nitril include propenonitrile, vinyl cyanide.

nitril (noun)	acrylonitrile (noun)
any of a class of organic compounds containing the cyano radical -CN	a colorless liquid unsaturated nitrile made from propene