dubiety vs uncertainty

dubiety

noun
  • A particular instance of doubt or uncertainty. 

  • Doubtfulness. 

uncertainty

noun
  • Something uncertain or ambiguous. 

  • Doubt; the condition of being uncertain or without conviction. 

  • A parameter that measures the dispersion of a range of measured values. 

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