hexine vs acetylene

hexine and acetylene both are nouns.

Word	Noun	Adjective	Verb	Adverb
hexine	Yes	No	No	No
acetylene	Yes	No	No	No

As nouns, acetylene is a hypernym of hexine; that is, acetylene is a word with a broader meaning than hexine:

hexine: a hydrocarbon, C6H10, of the acetylene series.
acetylene: a colorless flammable gas used chiefly in welding and in organic synthesis

Other hypernyms of hexine include alkyne, ethyne, alkene, olefin, olefine.

hexine (noun)	acetylene (noun)
a hydrocarbon, C6H10, of the acetylene series.	a colorless flammable gas used chiefly in welding and in organic synthesis