housecat vs ocelot

housecat

noun
  • A pet cat that is not allowed outside 

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