elegance vs propriety

elegance

noun
  • Grace, refinement, and beauty in movement, appearance, or manners. 

  • Restraint and grace of style. 

  • The beauty of an idea characterized by minimalism and intuitiveness while preserving exactness and precision. 

propriety

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

  • The fact of possessing something; ownership. 

  • Suitability, fitness; the quality of being appropriate. 

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