diatribe vs flout

diatribe

noun
  • An abusive, bitter, verbal attack or criticism: denunciation. 

  • A speech or writing which bitterly denounces something. 

  • A prolonged discourse. 

flout

noun
  • A mockery or insult. 

  • The act by which something is flouted; violation of a law. 

verb
  • To express contempt for (laws, rules, etc.) by word or action. 

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