condolences vs fervor

condolences

noun
  • comfort, support, or sympathy offered especially to the family and friends of somebody who has died. 

intj
  • Expressing sympathy to someone, especially after learning of a close death. 

fervor

noun
  • An intense, heated emotion; passion, ardor. 

  • Heat. 

  • A passionate enthusiasm for some cause. 

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