gaming vs pocket billiards

gaming

noun
  • Synonym of gambling 

  • The playing of a game or games, including but not limited to video games and games of chance. 

  • Careful, strategic use of rules to achieve one's purposes, as one would use the rules of a game. 

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