nontheism vs renunciation

nontheism

noun
  • Any of a range of concepts regarding spirituality and religion which do not include the idea of a deity in the form of a theistic god or gods. 

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. 

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