cards vs court card

cards

noun
  • card games 

court card

noun
  • A king, queen, or jack/knave card in a standard deck of playing cards. 

  • A postcard measuring approximately 4·75″ × 3·5″, in use mainly in the United Kingdom circa 1894–1902. 

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