jackpot vs pocket billiards

jackpot

noun
  • A money prize pool which accumulates until the conditions are met for it to be won. 

  • A jumble of felled timber. 

  • A large cash prize or money. 

  • A concentration of surface wood or fuel. 

  • A large accumulated point bonus, originally awarded after a long set of actions but now often easily available in multiball modes. 

  • An unexpected windfall or reward. 

  • A difficult situation. 

verb
  • To issue a jackpot. 

pocket billiards

noun
  • Synonym of pocket pool 

  • Any of a family of billiards games played on a specific class of billiards table, having six receptacles called pockets along the rails, in which balls are deposited as the main goal of play. 

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