autonym vs designation

autonym

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

  • 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. 

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

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

designation

noun
  • That which designates; a distinguishing mark or name; distinctive title; appellation. 

  • Selection and appointment for a purpose or office; allotment; direction. 

  • signification, meaning, for example of a word or phrase. 

  • An act or instance of designating; a pointing out or showing; indication. 

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