cleaver vs skean

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. 

skean

noun
  • A double-edged, leaf-shaped, typically bronze dagger formerly used in Ireland and Scotland. 

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