fast track vs hare

fast track

verb
  • To progress something with unusual rapidity. 

noun
  • A racetrack with optimum conditions for high speeds 

  • A railroad for express trains. 

  • The quickest or most direct method or path. 

  • A high-pressure or intensely competitive situation, particularly one characterised by rapid advancement. 

hare

verb
  • To move swiftly. 

adj
  • Grey, hoary; grey-haired, venerable (of people). 

  • Cold, frosty (of weather). 

noun
  • The player in a paperchase, or hare and hounds game, who leaves a trail of paper to be followed. 

  • Any of several plant-eating animals of the family Leporidae, especially of the genus Lepus, similar to a rabbit, but larger and with longer ears. 

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