complacent vs discontent

complacent

adj
  • Apathetic with regard to an apparent need or problem. 

  • Uncritically satisfied with oneself or one's achievements; smug. 

discontent

noun
  • Dissatisfaction. 

  • A longing for better times or circumstances. 

  • A discontented person; a malcontent. 

adj
  • Not content; discontented; dissatisfied. 

verb
  • To deprive of contentment; to make uneasy; to dissatisfy. 

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