self-confidence vs temerity

self-confidence

noun
  • The state of being self-confident 

  • A measure of one's belief in one's own abilities 

temerity

noun
  • Reckless boldness; foolish bravery. 

  • An act or case of reckless boldness. 

  • Effrontery; impudence. 

How often have the words self-confidence and temerity occurred in a corpus of books? (source: Google Ngram Viewer )