aflatoxin vs biological weapon

aflatoxin and biological weapon both are nouns.

Word	Noun	Adjective	Verb	Adverb
aflatoxin	Yes	No	No	No
biological weapon	Yes	No	No	No

As nouns, biological weapon is a hypernym of aflatoxin; that is, biological weapon is a word with a broader meaning than aflatoxin:

aflatoxin: a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon
biological weapon: any weapon usable in biological warfare

Other hypernyms of aflatoxin include bioarm, bioweapon, mycotoxin.

aflatoxin (noun)	biological weapon (noun)
a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon	any weapon usable in biological warfare