doom and gloom vs jocundity

doom and gloom

noun
  • Something considered indicative of feelings of pessimism and despair. 

jocundity

noun
  • A jocund remark; a witticism. 

  • The state of being jocund. 

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