doom and gloom vs mirth

doom and gloom

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

mirth

noun
  • The emotion usually following humour and accompanied by laughter; merriment; jollity; gaiety. 

  • That which causes merriment. 

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