hasten vs leg it

hasten

verb
  • To move or act in a quick fashion. 

  • To cause some scheduled event to happen earlier. 

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

leg it

verb
  • To hurry. 

  • To run away, to flee. 

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