kitty-cat vs ocelot

kitty-cat

noun
  • A domestic cat (subspecies Felis silvestris catus). 

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 kitty-cat and ocelot occurred in a corpus of books? (source: Google Ngram Viewer )