knacker's yard vs shipwreck

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. 

shipwreck

noun
  • A ship that has sunk or run aground so that it is no longer seaworthy. 

  • An event where a ship sinks or runs aground. 

  • destruction; ruin; irretrievable loss 

verb
  • To wreck a boat through a collision or mishap. 

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