fairground vs racecourse

fairground

noun
  • An area where a fair (an event for public entertainment) or other public event is held; a showground. 

  • A commercially-operated collection of rides, games and other entertainment attractions; an amusement park. 

racecourse

noun
  • A course over which races are run. 

  • A racetrack where horse races are run. 

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