irreverence vs low-mindedness

irreverence

noun
  • The state or quality of being irreverent; want of proper reverence; disregard of the authority and character of a superior. 

low-mindedness

noun
  • The characteristic of being low-minded; vulgarity or lack of honor. 

How often have the words irreverence and low-mindedness occurred in a corpus of books? (source: Google Ngram Viewer )