butcher vs serial killer

butcher

noun
  • A brutal or indiscriminate killer. 

  • A look. 

  • A person who prepares and sells meat (and sometimes also slaughters the animals). 

verb
  • To ruin (something), often to the point of defamation. 

  • To work as a butcher. 

  • To slaughter (animals) and prepare (meat) for market. 

  • To mess up hopelessly; to botch. 

  • To kill brutally. 

serial killer

noun
  • A person who commits multiple (more than two) murders, especially similar ones with no obvious motive over a period of time with a "cooling-off" period between each murder. 

How often have the words butcher and serial killer occurred in a corpus of books? (source: Google Ngram Viewer )