kickball vs murderball

kickball

noun
  • A sport similar to baseball, where a ball is kicked rather than hit. 

  • The ball used in the above sport. 

murderball

noun
  • A team sport resembling dodgeball in which players are eliminated ("murdered") by being struck with the ball. 

  • Wheelchair rugby. 

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