glue vs let go

glue

noun
  • Anything that binds two things or people together. 

  • A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance. 

verb
  • To join or attach something using glue. 

  • To cause something to adhere closely to; to follow attentively. 

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 glue and let go occurred in a corpus of books? (source: Google Ngram Viewer )