give it a rest vs quiet down

give it a rest

verb
  • Stop doing that; stop nagging, complaining, or otherwise being a nuisance. 

quiet down

verb
  • To make someone or something become quieter. 

  • To diminish in intensity. 

  • To become quieter. 

How often have the words give it a rest and quiet down occurred in a corpus of books? (source: Google Ngram Viewer )