knock down vs shipwreck

knock down

verb
  • To hit or knock (something or someone), intentionally or accidentally, so that it falls. 

  • To drink fast. 

  • To disassemble for shipment. 

  • To reduce the price of. 

  • To demolish. 

  • To approve a drinking toast by banging glasses on the table. 

  • At an auction, to declare (something) sold with a blow from the gavel. 

shipwreck

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

noun
  • An event where a ship sinks or runs aground. 

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

  • destruction; ruin; irretrievable loss 

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