beat the pants off vs massacre

beat the pants off

verb
  • To thoroughly and decisively defeat someone, either in a physical fight or, figuratively, in a competition. 

massacre

verb
  • To win against (an opponent) very decisively. 

  • To perform (a work, such as a musical piece or a play) very poorly. 

  • To kill with great force or brutality. 

  • To kill in considerable numbers where little or no resistance can be made, with indiscriminate violence, without necessity, and contrary to civilized norms. (Often limited to the killing of human beings.) 

noun
  • St. Bartholomew's Day Massacre 

  • Any overwhelming defeat, as in a game or sport. 

  • The killing of a considerable number (usually limited to people) where little or no resistance can be made, with indiscriminate violence, without necessity, and contrary to civilized norms. 

How often have the words beat the pants off and massacre occurred in a corpus of books? (source: Google Ngram Viewer )