festivity vs hilarity

festivity

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

  • A festival or similar celebration. 

hilarity

noun
  • Something that induces laughter. 

  • A great amount of amusement, usually accompanied by laughter. 

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