piff vs tonk

piff

verb
  • To throw something vigorously. 

intj
  • An exclamation of annoyance or contempt; pish; pshaw. 

adj
  • good or attractive. 

noun
  • Piffle; nonsense; rubbish. 

tonk

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

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 

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