flout vs observe

flout

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

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

  • A mockery or insult. 

observe

verb
  • To comment on something; to make an observation. 

  • To take note of and celebrate (a holiday or similar occurrence); to follow (a type of time or calendar reckoning). 

  • To notice or view, especially carefully or with attention to detail. 

  • To follow or obey the custom, practice, or rules (especially of a religion). 

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