banter vs sadness

banter

verb
  • To delude or trick; to play a prank upon. 

  • To challenge to a match. 

  • To haggle; cheapen the price. 

  • To engage in banter or playful conversation. 

  • To play or do something amusing. 

  • To tease (someone) mildly. 

  • To joke about; to ridicule (a trait, habit, etc.). 

noun
  • Sharp, good-humoured, playful, typically spontaneous conversation. 

sadness

noun
  • The state or emotion of being sad. 

  • An event in one's life that causes sadness. 

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