allonym vs autonym

allonym

noun
  • An allonymous work: a book published under the name of a person other than its true author. 

  • A pseudonym, (particularly) another person's name used as a pseudonym by the author of a work. 

autonym

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

  • 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. 

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