farm cat vs great cat

farm cat

noun
  • A domestic cat, usually of a mixed breed, that lives primarily outdoors, in a feral or semiferal condition on agricultural properties. 

great cat

noun
  • Used other than figuratively or idiomatically: see great, cat. 

  • Any large feline animal, especially one of the Panthera genus, including tigers, lions, jaguars and leopards. 

How often have the words farm cat and great cat occurred in a corpus of books? (source: Google Ngram Viewer )