bravery vs steadfastness

bravery

noun
  • Being brave, courageousness. 

  • A brave act. 

  • Splendor, magnificence. 

steadfastness

noun
  • Loyalty in the face of trouble and difficulty. 

  • Steadfast resolution. 

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