depart vs persist

depart

verb
  • To disappear, vanish; to cease to exist. 

  • To leave. 

  • To die. 

  • To go away from; to leave. 

  • To deviate (from), be different (from), fail to conform. 

  • To set out on a journey. 

persist

verb
  • To continue to exist. 

  • To go on stubbornly or resolutely. 

  • To repeat an utterance. 

  • To cause to persist; make permanent. 

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