auto racing vs sprint

auto racing

noun
  • Any of various sports in which automobiles (motor cars) are raced, either around a track, on roads or across country 

sprint

noun
  • A short race at top speed. 

  • In Agile software development, a period of development of a fixed time that is preceded and followed by meetings. 

  • A burst of speed or activity. 

verb
  • To run, cycle, etc. at top speed for a short period. 

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