domoic acid vs neurolysin

domoic acid and neurolysin both are nouns.

Word	Noun	Adjective	Verb	Adverb
domoic acid	Yes	No	No	No
neurolysin	Yes	No	No	No

As nouns, neurolysin is a hypernym of domoic acid; that is, neurolysin is a word with a broader meaning than domoic acid:

domoic acid: a neurotoxin that is deadly for humans; found in various marine algae
neurolysin: any toxin that affects neural tissues

Other hypernyms of domoic acid include neurotoxin.

domoic acid (noun)	neurolysin (noun)
a neurotoxin that is deadly for humans; found in various marine algae	any toxin that affects neural tissues