confidence vs flinching

confidence

noun
  • A feeling of certainty; firm trust or belief; faith. 

  • Information held in secret; a piece of information shared but to thence be kept in secret. 

  • Self-assurance. 

flinching

noun
  • A flinching motion; a flinch. 

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