butcher vs fratricide

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. 

fratricide

noun
  • The intentional or unintentional killing of a comrade in arms. 

  • A person who commits fratricide. 

  • The killing of one's brother (or sister). 

  • The undesirable situation where the separate missiles from a MIRV interfere with each other as they explode. 

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