olefin vs cycloolefin

olefin and cycloolefin both are nouns.

Word	Noun	Adjective	Verb	Adverb
olefin	Yes	No	No	No
cycloolefin	Yes	No	No	No

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

olefin: any unsaturated aliphatic hydrocarbon
cycloolefin: alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character.

Other hyponyms of olefin include ethene, ethylene, cycloalkene, hexine.

olefin (noun)	cycloolefin (noun)
any unsaturated aliphatic hydrocarbon	alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character.