daring vs fortitude

daring

noun
  • Boldness. 

adj
  • Racy; sexually provocative. 

  • Courageous or showing bravery; doughty. 

  • Adventurous, willing to take on or look for risks; overbold. 

fortitude

noun
  • Mental or emotional strength that enables courage in the face of adversity. 

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