antitoxin vs antibody

antitoxin and antibody both are nouns.

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

As nouns, antibody is a hypernym of antitoxin; that is, antibody is a word with a broader meaning than antitoxin:

antitoxin: an antibody that can neutralize a specific toxin
antibody: any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response

antitoxin (noun)	antibody (noun)
an antibody that can neutralize a specific toxin	any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response