condolences vs reassurance

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. 

reassurance

noun
  • The feeling of being reassured, of having confidence restored, of having apprehensions dispelled. 

  • The act of confirming someone's opinion or impression. 

  • Reinsurance. 

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