autonym vs nomen

autonym

noun
  • A name used by a group or category of people to refer to themselves or their language, as opposed to a name given to them by other groups. 

  • An infraspecific name in which the specific epithet is repeated. 

  • A work published under the author's true name. 

  • The true name of a person or other entity, especially an author. 

nomen

noun
  • The name of a citizen of Ancient Rome, designating them as a member of a gens. 

  • The birth name of a pharaoh, the fifth of the five names of the royal titulary, traditionally encircled by a cartouche and preceded by the title zꜣ-rꜥ. 

How often have the words autonym and nomen occurred in a corpus of books? (source: Google Ngram Viewer )