cast away vs dissipate

cast away

verb
  • To discard. 

  • To abandon or maroon. 

  • To eliminate by means of a cast operation. 

dissipate

verb
  • To drive away, disperse. 

  • To use up or waste; squander. 

  • To vanish by dispersion. 

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

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