backchat vs raillery

backchat

noun
  • Cheeky or impertinent responses, especially to criticism. 

verb
  • To respond in a disputative, often sarcastic manner. 

raillery

noun
  • Good-natured banter, jest, or ridicule. 

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