dissipate vs melt 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. 

melt away

verb
  • To fade or wane 

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