get rid of vs throw away

get rid of

verb
  • to rid oneself of; dispose (of); to remove; to abolish; to lose 

throw away

verb
  • To discard (trash, garbage, or the like), to toss out, to put in the trash, to dispose of. 

  • To intentionally throw an incomplete pass. 

  • To waste, to squander. 

  • To give lightly, in an offhand manner. 

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