found vs let go

found

verb
  • To form by melting a metal and pouring it into a mould; to cast. 

  • To melt, especially of metal in an industrial setting. 

  • To begin building. 

  • To start (an institution or organization). 

noun
  • A thin, single-cut file for comb-makers. 

let go

verb
  • 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. 

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

  • To gain weight 

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