cast away vs dispose

cast away

verb
  • To discard. 

  • To abandon or maroon. 

  • To eliminate by means of a cast operation. 

dispose

verb
  • To eliminate or to get rid of something. 

  • To deal out; to assign to a use. 

  • To distribute or arrange; to put in place. 

  • To incline. 

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