discontented vs smug

discontented

adj
  • Experiencing discontent, dissatisfaction. 

  • Of or pertaining to discontent. 

smug

adj
  • Irritatingly pleased with oneself; offensively self-complacent, self-satisfied. 

  • Showing smugness; showing self-complacency, self-satisfaction. 

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