Roger vs tonk

Roger

name
  • A male given name from the Germanic languages. 

  • A surname originating as a patronymic. 

  • Jolly Roger (pirate flag) 

tonk

noun
  • An illegal immigrant of any country. 

  • A matching card game, combining features of knock rummy and conquian. 

  • An item of value, or of perceived value, especially for sale. 

  • A tank. 

  • A resounding strike of the ball; a powerful hit of the ball with the bat. 

  • A sound produced by knocking on something hollow. 

intj
  • representation of a sound produced by knocking on something hollow 

verb
  • To knock or strike (a ball) so that it flies through the air. 

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