calling name vs sobriquet

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. 

sobriquet

noun
  • A familiar name for a person or thing; a nickname (sometimes assumed by the person, but often given by others), that is descriptive. 

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