calling card vs character

calling card

noun
  • An attribute, symptom, object, or behavior which is distinctly characteristic of someone or something. 

  • A card advertising the services of a prostitute. 

  • Excrement, especially of a domestic animal. 

  • A small printed card which identifies the bearer, traditionally presented for introduction when making a social visit to a home or when attending a formal social event or business meeting. 

  • A phonecard. 

character

noun
  • A complex of traits marking a person, group, breed, or type. 

  • Strength of mind; resolution; independence; individuality; moral strength. 

  • A complex number representing an element of a finite Abelian group. 

  • A being involved in the action of a story. 

  • A person or individual, especially one who is unknown. 

  • Quality, position, rank, or capacity; quality or conduct with respect to a certain office or duty. 

  • One of the basic elements making up a text file or string: a code representing a printing character or a control character. 

  • A distinguishing feature; characteristic; trait; phene. 

  • A written or printed symbol, or letter. 

  • A unique or extraordinary individual; a person characterized by peculiar or notable traits, especially charisma. 

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