agon vs counterplay

agon

noun
  • A two-player board game played on a hexagonally-tiled board, popular in Victorian times. 

  • A contest in ancient Greece, as in athletics or music, in which prizes were awarded. 

  • A struggle or contest; conflict; especially between the protagonist and antagonist in a literary work. 

  • An intellectual conflict or apparent competition of ideas. 

counterplay

noun
  • A subversive style of gameplay in which a player attempts to overturn the usual rules and conventions of the game. 

  • A game move made as a response. 

  • A counterattack in a different part of the board. 

verb
  • To make a counterplay; to play in response. 

  • To counter; to contrast or contradict. 

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