murderer vs pigsticker

murderer

noun
  • A person who commits murder. 

pigsticker

noun
  • A large knife, used as a weapon. 

  • A spike bayonet 

  • A hunter of wild boar. 

  • A pork butcher. 

  • A sled with a pointed front. 

  • A horse well-suited to hunt wild boar. 

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