precipitin vs antibody

precipitin and antibody both are nouns.

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

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

precipitin: an antibody that causes precipitation when it unites with its antigen
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

precipitin (noun)	antibody (noun)
an antibody that causes precipitation when it unites with its antigen	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