fast track vs hasten

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. 

hasten

verb
  • To make someone speed up or make something happen quicker. 

  • To cause some scheduled event to happen earlier. 

  • To move or act in a quick fashion. 

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