doge vs mastiff

doge

noun
  • A dog. 

  • Specifically, a Shiba Inu, as in the doge meme. 

  • The chief magistrate in the republics of Venice and Genoa. 

mastiff

noun
  • One of an old breed of powerful, deep-chested, and smooth-coated dogs, used chiefly as watchdogs and guard dogs. 

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