boot out vs let go

boot out

verb
  • Emphatic synonym of kick out: to remove, to eject, to expel. 

  • To fall or slide out of a turn due to excessive lean, which causes the athlete's boot to contact and pivot on the surface and the proper surface contact element to lose contact and traction. 

let go

verb
  • To release from one's grasp; to go from a state of holding on to a state of no longer holding on. 

  • To dismiss from employment. 

  • To ignore (a comment, etc.). 

  • To emotionally disengage or to distract oneself from a situation. 

  • To fail to maintain a standard of appearance, behavior, or performance. 

  • Used other than figuratively or idiomatically: see let, go. 

  • To gain weight 

How often have the words boot out and let go occurred in a corpus of books? (source: Google Ngram Viewer )