exterminator vs pigsticker

exterminator

noun
  • Someone or something that exterminates. 

  • Specifically, a person whose job it is to kill insects and other pests in a building. 

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 exterminator and pigsticker occurred in a corpus of books? (source: Google Ngram Viewer )