punch someone's lights out vs slaughter

punch someone's lights out

verb
  • To give someone a serious beating using one's fists; to punch someone until he or she is unconscious. 

slaughter

verb
  • To kill someone or something, especially in a particularly brutal manner. 

  • To butcher animals, generally for food. 

  • To massacre people in large numbers. 

noun
  • A rout or decisive defeat. 

  • A mass destruction of non-living things. 

  • The killing of animals, generally for food. 

  • A massacre; the killing of a large number of people. 

  • A group of iguanas. 

How often have the words punch someone's lights out and slaughter occurred in a corpus of books? (source: Google Ngram Viewer )