exuberant vs unhappy

exuberant

adj
  • Very high-spirited; extremely energetic and enthusiastic. 

  • Abundant, luxuriant. 

unhappy

adj
  • Not happy; sad. 

  • Not satisfied; unsatisfied. 

noun
  • An individual who is not happy. 

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