bravado vs demonstration

bravado

noun
  • A swaggering show of defiance or courage. 

  • A false show of courage. 

demonstration

noun
  • An event at which something will be demonstrated. 

  • A public display of group opinion, such as a protest march. 

  • A proof. 

  • Expression of one's feelings by outward signs. 

  • The act of demonstrating; showing or explaining something. 

  • A prisoner's act of beating up another prisoner. 

  • A show of military force. 

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