propriety vs prudery

propriety

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

  • The fact of possessing something; ownership. 

  • Suitability, fitness; the quality of being appropriate. 

prudery

noun
  • Prudish behaviour 

  • The condition of being prudish; prudishness 

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