ardor vs exuberance

ardor

noun
  • Spirit; enthusiasm; passion. 

  • Intense heat. 

  • Great warmth of feeling; fervor; passion. 

exuberance

noun
  • The quality of being exuberant; cheerful or vigorous enthusiasm; liveliness. 

  • An abundance of wealth. 

  • An overflowing quantity; superfluousness. 

  • An instance of exuberant behaviour. 

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