bravery vs irresolution

bravery

noun
  • Being brave, courageousness. 

  • A brave act. 

  • Splendor, magnificence. 

irresolution

noun
  • Lack of resolution; lack of decision or purpose; vacillation. 

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