calling name vs cognomen

calling name

noun
  • The name by which a person is normally identified in conversation. 

  • The name associated with the telephone number or similar identifier of a caller. 

cognomen

noun
  • A nickname or epithet by which someone is identified. 

  • The third part of the name of a citizen of Ancient Rome. 

  • Surname. 

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