evaporate vs peter out

evaporate

verb
  • to expel moisture from (usually by means of artificial heat), leaving the solid portion 

  • to give vent to; to dissipate 

  • to transition from a liquid state into a gaseous state 

  • to disappear; to escape or pass off without effect 

peter out

verb
  • Synonym of peter (“originally (mining), of a vein of ore: to be depleted of ore; now (generally), to diminish to nothing; to dwindle, to trail off”) 

How often have the words evaporate and peter out occurred in a corpus of books? (source: Google Ngram Viewer )