brawl vs unhappiness

brawl

verb
  • To engage in a brawl; to fight or quarrel. 

  • To create a disturbance; to complain loudly. 

  • To pour abuse on; to scold. 

  • Especially of a rapid stream running over stones: to make a loud, confused noise. 

noun
  • A disorderly argument or fight, usually with a large number of people involved. 

unhappiness

noun
  • The feeling of not being happy 

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