get rid of vs subduct

get rid of

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

subduct

verb
  • To remove; to deduct; to take away; to disregard. 

  • To push under or below. 

  • To move downwards underneath something. 

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