cleaver vs meatgrinder

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. 

meatgrinder

noun
  • A device for cutting meat into very small pieces. 

  • An activity with a high casualty or attrition rate, such as a military battle or an occupational or athletic activity. 

  • The mountainous second day of the race was a real meatgrinder, with 20% of racers dropping out. 

  • A process that is likely to be injurious in a non-physical way. 

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