compel vs rid

compel

verb
  • To force, constrain or coerce. 

  • To exact, extort, (make) produce by force. 

  • To overpower; to subdue. 

rid

verb
  • To free (something) from a hindrance or annoyance. 

adj
  • Released from an obligation, problem, etc. (usually followed by of). 

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