incontrovertibility vs positivity

incontrovertibility

noun
  • The state or characteristic of being incontrovertible, of not being debatable; incontestability. 

positivity

noun
  • The condition of being positive (in all senses); positivism. Optimism. 

  • The result of being positive. 

  • The characteristic of possessing a positive electric charge 

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