egotism vs uncertainty

egotism

noun
  • A belief that one is superior to or more important than others. 

  • The result or product of being egoistic. 

  • Egoism (belief that behavior should be directed towards one's self-interest). 

  • A tendency to talk excessively about oneself. 

uncertainty

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

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

  • Something uncertain or ambiguous. 

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