boldness vs indubitability

boldness

noun
  • presumptuousness 

  • The relative weight of a font; the thickness of its strokes. 

  • The state of being bold; courage. 

indubitability

noun
  • The quality or state of being indubitable. 

  • Something that cannot be doubted; a certainty. 

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