bravura vs weakness

bravura

noun
  • A highly technical or difficult piece, usually written for effect. 

  • A display of daring. 

adj
  • Overly showy; ostentatious. 

weakness

noun
  • An inadequate quality; fault 

  • The condition of being weak. 

  • A special fondness or desire. 

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