angst vs contentment

angst

verb
  • To suffer angst; to fret. 

noun
  • Emotional turmoil; painful sadness. 

  • A feeling of acute but vague anxiety or apprehension often accompanied by depression, especially philosophical anxiety. 

contentment

noun
  • happiness in one's situation; satisfaction 

  • The neurophysiological experience of satisfaction and being at ease in one's situation, body, and/or mind. 

  • The state or degree of being contented or satisfied. 

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