cleaver vs tusker

cleaver

noun
  • A squarish, heavy knife used by butchers for hacking through bones, etc. 

  • A type of clave, or rhythm stick, a concussive musical instrument used in traditional Bahamian music. 

  • The act of eliminating someone or something, especially when done by someone with a history of other eliminations; a dismissal, rejection, or removal. 

tusker

noun
  • A tool used in peat cutting, a type of spade similar to a cascrom. 

  • An animal, such as a bull elephant or a boar, with large tusks. 

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