big cat vs great cat

big cat

noun

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

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

great cat

noun

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

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

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