antitoxin vs antivenene

antitoxin and antivenene both are nouns.

Word	Noun	Adjective	Verb	Adverb
antitoxin	Yes	No	No	No
antivenene	Yes	No	No	No

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

antitoxin: an antibody that can neutralize a specific toxin
antivenene: an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal

Other hyponyms of antitoxin include antivenin, tetanus antitoxin.

antitoxin (noun)	antivenene (noun)
an antibody that can neutralize a specific toxin	an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal