let go vs put on

let go

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

  • To dismiss from employment. 

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

  • 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. 

  • To gain weight 

put on

verb
  • Used other than figuratively or idiomatically: see put, on. 

  • To assume, adopt or affect; to behave in a particular way as a pretense. 

  • To don (clothing, equipment, or the like). 

  • To initiate cooking or warming, especially on a stovetop. 

  • To perform for an audience. 

  • To organize a performance for an audience. 

  • To fool, kid, deceive. 

  • To bet on. 

  • To play (a recording). 

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