backtalk vs scoff

backtalk

verb
  • To respond to in an aggressively disputatious, often sarcastic or insolent manner. 

noun
  • Verbal impudence or argumentative discourse, given in response. 

scoff

verb
  • To jeer; to laugh with contempt and derision. 

  • To eat. 

  • To eat food quickly. 

  • To mock; to treat with scorn. 

noun
  • A derisive or mocking expression of scorn, contempt, or reproach. 

  • The act of eating. 

  • An object of scorn, mockery, or derision. 

  • Food. 

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