kill by hanging vs massacre

kill by hanging

verb
  • to kill someone by suspending them by the neck 

massacre

verb
  • To kill with great force or brutality. 

  • To win against (an opponent) very decisively. 

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

  • 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 kill by hanging and massacre occurred in a corpus of books? (source: Google Ngram Viewer )