defiance vs insolence

defiance

noun
  • A challenging attitude or behaviour; challenge. 

  • The feeling, or spirit of being defiant. 

  • Open or bold resistance to or disregard for authority, opposition, or power. 

insolence

noun
  • Arrogant conduct; insulting, bold behaviour or attitude. 

  • Insolent conduct or treatment; insult. 

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