drive off vs get rid of

drive off

verb
  • To force to leave or go away. 

  • Used other than figuratively or idiomatically: see drive, off. 

get rid of

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

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