renunciation vs resignation

renunciation

noun
  • The resignation of an ecclesiastical office. 

  • In the Anglican baptismal service, the part in which the candidate in person or by his sureties renounces the Devil and all his works. 

  • The act of rejecting or renouncing something as invalid. 

  • The act by which a person abandons a right acquired, but without transferring it to another. 

resignation

noun
  • The act of resigning. 

  • A written or oral declaration that one resigns. 

  • The form by which a vassal returns the feu into the hands of a superior. 

  • An uncomplaining acceptance of something undesirable but unavoidable. 

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