dissipate vs fade away

dissipate

verb
  • To vanish by dispersion. 

  • To drive away, disperse. 

  • To use up or waste; squander. 

  • To cause energy to be lost through its conversion to heat. 

fade away

verb
  • To lose strength, become weaker; to wane; to disappear or reduce slowly. 

noun
  • A technique of painting young women, by having their clothes fade into the background. 

How often have the words dissipate and fade away occurred in a corpus of books? (source: Google Ngram Viewer )