propriety vs solecism

propriety

noun
  • The fact of possessing something; ownership. 

  • Suitability, fitness; the quality of being appropriate. 

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

solecism

noun
  • An erroneous or improper usage. 

  • A faux pas or breach of etiquette; a transgression against the norms of expected behavior. 

  • Error in the use of language. 

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