propriety vs worthiness

propriety

noun
  • Suitability, fitness; the quality of being appropriate. 

  • The fact of possessing something; ownership. 

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

worthiness

noun
  • The state or quality of being qualified or eligible. 

  • The result or product of having value or merit. 

  • The result or product of being qualified or eligible. 

  • The state or quality of having value or merit. 

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