bravery vs vacillation

bravery

noun
  • Being brave, courageousness. 

  • A brave act. 

  • Splendor, magnificence. 

vacillation

noun
  • Changing location by moving back and forth. 

  • Indecision in speech or action. 

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