flout vs tsk tsk

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. 

tsk tsk

noun
  • The sound of such an exclamation of disapproval. 

intj
  • An exclamation of disapproval. 

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