get ahead of vs overtake

get ahead of

verb
  • Used other than figuratively or idiomatically: see get, ahead, of. 

  • To take preemptive action before the development becomes reality. 

overtake

verb
  • To occur unexpectedly; take by surprise; surprise and overcome; carry away 

  • To become greater than something else 

  • To pass a slower moving object or entity (on the side closest to oncoming traffic). 

noun
  • An act of overtaking; an overtaking maneuver. 

How often have the words get ahead of and overtake occurred in a corpus of books? (source: Google Ngram Viewer )