pigsticker vs slaughterer

pigsticker

noun
  • A pork butcher. 

  • A spike bayonet 

  • A hunter of wild boar. 

  • A large knife, used as a weapon. 

  • A sled with a pointed front. 

  • A horse well-suited to hunt wild boar. 

slaughterer

noun
  • A butcher (as a profession or job). 

  • A ritual slaughterer, kosher slaughterer, kosher butcher, shochet / shokhet. 

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