racetrack vs steeplechase

racetrack

noun
  • A course over which any type of races are run. 

  • A characteristic circular erosion pattern in deposition processes. 

steeplechase

noun
  • An athletics event in which the runners have to run 3000 metres round a track, jumping hurdles and a water obstacle along the way 

  • A horse race, either across open country, or over an obstacle course. 

verb
  • To take part in a steeplechase event. 

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