kitty vs pocket billiards

kitty

noun
  • A money pool used for a particular purpose, such as for a card game or for shared expenses. 

  • In a home game, a small, specified amount taken from each pot to pay the host's expenses. 

  • A kitten or young cat. 

  • A set of additional cards dealt face down in some games. 

  • A pet name for a cat. 

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 kitty and pocket billiards occurred in a corpus of books? (source: Google Ngram Viewer )