chloroprene vs butadiene

chloroprene and butadiene both are nouns.

Word	Noun	Adjective	Verb	Adverb
chloroprene	Yes	No	No	No
butadiene	Yes	No	No	No

As nouns, butadiene is a hypernym of chloroprene; that is, butadiene is a word with a broader meaning than chloroprene:

chloroprene: derivative of butadiene used in making neoprene by polymerization
butadiene: a gaseous hydrocarbon C4H6; used in making synthetic rubbers

chloroprene (noun)	butadiene (noun)
derivative of butadiene used in making neoprene by polymerization	a gaseous hydrocarbon C4H6; used in making synthetic rubbers