gambol vs pole-vault

gambol

verb
  • To do a forward roll. 

  • To move about playfully; to frolic. 

noun
  • An instance of more general frisking or frolicking. 

  • An instance of running or skipping about playfully. 

pole-vault

verb
  • To perform a pole vault 

  • To vault over something using a pole vault 

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