fuss vs let go

fuss

verb
  • To be very worried or excited about something, often too much. 

  • To show affection for, especially animals. 

  • To pet. 

  • To cry or be ill-humoured. 

  • To fiddle; fidget; wiggle, or adjust 

noun
  • Excessive activity, worry, bother, or talk about something. 

  • A complaint or noise; a scene. 

  • An exhibition of affection or admiration. 

let go

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

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