provincialism vs vernacularity

provincialism

noun
  • The quality of being provincial; having provincial tastes, mentality, manners. 

  • A word or locution characteristic of a region or district. 

  • Synonym of regionalism: belief in the superiority of one's regional government; the belief that most or nearly all political power should be decentralized to provincial governments. 

vernacularity

noun
  • The quality of being vernacular. 

  • A vernacular utterance. 

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