dodgeball vs wheelchair rugby

dodgeball

noun
  • A team sport whose main objective is to dodge or catch balls thrown by the opposition. 

  • The ball thrown in this sport. 

wheelchair rugby

noun
  • A variation of rugby played by players in wheelchairs, primarily players with some disability. It is a full-contact sport and is played on a hardwood court with a ball similar to a basketball. 

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