playthrough vs quitting

playthrough

noun
  • The act, or a recording, of playing a game from start to finish. 

  • The cumulative monetary amount that must be wagered before an account may be withdrawn, typically stated as a multiple of the initial deposit. 

quitting

noun
  • The deliberate ending of something. 

  • The ceasing of a habit, especially smoking cigarettes or other addictive behaviors. 

  • The termination of employment, initiated by the employee. 

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