adjure vs implore

adjure

verb
  • To earnestly appeal to or advise; to charge solemnly. 

  • To issue a formal command. 

implore

verb
  • To beg or plead that (someone) earnestly or urgently do something; to beseech, to entreat. 

  • To beg or plead for (something) earnestly or urgently; to beseech. 

  • Often followed by for (a thing) or of (a person): to express an earnest or urgent plea. 

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