alleviation vs condolences

alleviation

noun
  • the act of alleviating; relief or mitigation. 

  • the act of reducing pain or anything else unpleasant; easement 

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. 

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