piety vs self-satisfaction

piety

noun
  • Similar reverence to one's parents and family or to one's country. 

  • Reverence and devotion to God. 

  • A devout act or thought. 

  • A belief that is accepted unthinkingly and with undue reverence. 

self-satisfaction

noun
  • A feeling of fulfillment or contentment with respect to one's own accomplishments or situation. 

  • The state of being excessively pleased with oneself; smugness. 

How often have the words piety and self-satisfaction occurred in a corpus of books? (source: Google Ngram Viewer )