international football vs rugby

international football

noun
  • Soccer. 

  • Used other than figuratively or idiomatically: see international, football. 

  • The combination of Canadian football and American football. 

rugby

noun
  • A form of football in which players can hold or kick an ovoid ball; rugby football. The ball cannot be handled forwards and points are scored by touching the ball to the ground in the area past the opponent's territory or by kicking the ball between goalposts and over a crossbar. 

  • The form of the game known as rugby union (see the usage note). 

  • Rubber cement, contact cement. 

verb
  • To play rugby. 

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