actuality vs indubitability

actuality

noun
  • An instance or quality of being actual or factual; fact. 

  • Live reporting on current affairs. 

  • The state of existing; existence. 

  • A short early motion picture. 

indubitability

noun
  • The quality or state of being indubitable. 

  • Something that cannot be doubted; a certainty. 

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