let go vs powder

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 

powder

verb
  • To depart suddenly; to "take a powder". 

  • To sprinkle with powder, or as if with powder. 

  • To turn into powder; to become powdery. 

  • To use powder on the hair or skin. 

  • To reduce to fine particles; to pound, grind, or rub into a powder. 

noun
  • A mixture of fine dry, sweet-smelling particles applied to the face or other body parts, to reduce shine or to alleviate chaffing. 

  • An explosive mixture used in gunnery, blasting, etc.; gunpowder. 

  • The fine particles which are the result of reducing a dry substance by pounding, grinding, or triturating, or the result of decay; dust. 

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