indecency vs propriety

indecency

noun
  • Something showing lack of decency; something (such as a word) that is indecent. 

  • Lack of decency; the property or degree of being indecent 

propriety

noun
  • The fact of possessing something; ownership. 

  • Suitability, fitness; the quality of being appropriate. 

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

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