ennui vs uncontent

ennui

noun
  • A gripping listlessness or melancholia caused by boredom; depression. 

verb
  • To make bored or listless; to weary. 

uncontent

noun
  • A lack of contentment. 

adj
  • Not content; uncontented. 

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