calling card vs maverick

calling card

noun
  • Excrement, especially of a domestic animal. 

  • A card advertising the services of a prostitute. 

  • 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. 

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

  • A phonecard. 

maverick

noun
  • An unbranded range animal. 

  • A person in the military who became an officer by going to college while on active duty as an enlisted person. 

  • Anything dishonestly obtained. 

  • A queen and a jack as a starting hand in Texas hold 'em. 

  • One who creates or uses controversial or unconventional ideas or practices. 

  • One who is unconventional or does not abide by rules. 

verb
  • To seize without a legal claim. 

  • To take an unbranded range animal. 

adj
  • Showing independence in thoughts or actions. 

  • Unbranded. 

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