agglutinin vs antibody

agglutinin and antibody both are nouns.

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

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

agglutinin: an antibody that causes agglutination of a specific 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

agglutinin (noun)	antibody (noun)
an antibody that causes agglutination of a specific 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