gaming vs sweepstake

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. 

sweepstake

noun
  • A lottery in which the prize or prizes constitute all the money paid by the participants. 

  • A prize draw. 

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