butchery vs knacker's yard

butchery

noun
  • An abattoir, a slaughterhouse. 

  • A disastrous effort, an atrocious failure. 

  • A meat market 

  • The cruel, ruthless killings of humans, as at a slaughterhouse. 

  • The stereotypical behaviors and accoutrements of being a butch lesbian. 

  • The butchering of meat. 

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 butchery and knacker's yard occurred in a corpus of books? (source: Google Ngram Viewer )