get rid of vs give someone the boot

get rid of

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

give someone the boot

verb
  • (idiomatic, Britain, informal) To fire, sack, or eject someone. 

  • Used other than figuratively or idiomatically: see give, the, boot. 

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