cockatrice vs mutton

cockatrice

noun
  • A legendary creature about the size and shape of a dragon or wyvern, but in appearance resembling a giant rooster, with some lizard-like characteristics. 

  • A snake or serpent that appears to be hatched of a rooster, or cock's, egg. 

  • The cobra. 

mutton

adj
  • deaf. 

noun
  • Em, a unit of measurement equal to the height of the type in use. 

  • The meat of sheep used as food. 

  • The meat of a sheep, goat, urial, or other caprine. 

  • An old Anglo-French gold coin impressed with the image of a lamb. 

  • The meat of goat used as food. 

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