bravery vs self-confidence

bravery

noun
  • Being brave, courageousness. 

  • A brave act. 

  • Splendor, magnificence. 

self-confidence

noun
  • The state of being self-confident 

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

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