festivity vs sadness

festivity

noun
  • An experience or expression of celebratory feeling, merriment, gaiety. 

  • A festival or similar celebration. 

sadness

noun
  • The state or emotion of being sad. 

  • An event in one's life that causes sadness. 

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