agglutinogen vs antigen

agglutinogen and antigen both are nouns.

Word	Noun	Adjective	Verb	Adverb
agglutinogen	Yes	No	No	No
antigen	Yes	No	No	No

As nouns, antigen is a hypernym of agglutinogen; that is, antigen is a word with a broader meaning than agglutinogen:

agglutinogen: any substance that acts as an antigen to cause agglutinin production
antigen: any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)

agglutinogen (noun)	antigen (noun)
any substance that acts as an antigen to cause agglutinin production	any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)