ribaldry vs salacity

ribaldry

noun
  • Joking or humorous language or behaviour used in a vulgar or lewd fashion. 

salacity

noun
  • An act that is salacious, (lewd, obscene or bawdy); a salacious image or piece of writing. 

  • The state or quality of being salacious; lewdness, obscenity, bawdiness. 

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