negativity vs nontheism

negativity

noun
  • The characteristic of being pessimistic or contrarian. 

  • Negative sentiment. 

  • The characteristic of having a negative charge. 

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. 

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