jocundity vs mirth

jocundity

noun
  • A jocund remark; a witticism. 

  • The state of being jocund. 

mirth

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

  • That which causes merriment. 

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