big cat vs ocelot

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. 

ocelot

noun
  • An American feline carnivore (Leopardus pardalis, syn. Felis pardalis) covered with blackish ocellated spots and blotches which are variously arranged. 

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