courbette vs gambol

courbette

noun
  • A movement in dressage in which the horse makes a series of jumps on the hind legs with the forelegs in the air. 

gambol

noun
  • An instance of running or skipping about playfully. 

  • An instance of more general frisking or frolicking. 

verb
  • To move about playfully; to frolic. 

  • To do a forward roll. 

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