bloodbath vs knacker's yard

bloodbath

noun
  • Indiscriminate killing or slaughter; a massacre. 

  • A large financial loss or massive layoff brought about by negative economic conditions. 

  • An aggressive or very violent contest or confrontation. 

  • A bath taken in warm blood used as a restorative or medical treatment. 

  • An upset (as of a game with unexpected results, or a national presidential convention) or heavy defeat. 

knacker's yard

noun
  • The area of a slaughterhouse where carcasses unfit for human consumption or other purposes are rendered down to produce useful materials such as glue. 

  • A (notional) place to send a person or object that is spent beyond all reasonable use. 

How often have the words bloodbath and knacker's yard occurred in a corpus of books? (source: Google Ngram Viewer )