propriety vs salacity

propriety

noun
  • The fact of possessing something; ownership. 

  • Suitability, fitness; the quality of being appropriate. 

  • Correctness in behaviour and morals; good manners, seemliness. 

salacity

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

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

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