felicity vs worry

felicity

noun
  • Something that is either a source of happiness or particularly apt. 

  • An apt and pleasing style in speech, writing, etc.; (countable) an apt and pleasing choice of words. 

  • Happiness; (countable) an instance of this. 

  • Reproduction of a sign with fidelity. 

  • Good luck; success; (countable) An instance of unexpected good luck; a stroke of luck; also, a lucky characteristic. 

worry

noun
  • A strong feeling of anxiety. 

  • An instance or cause of such a feeling. 

  • A person who causes worry. 

verb
  • To harass; to irritate or distress. 

  • To touch repeatedly, to fiddle with. 

  • To be troubled; to give way to mental anxiety or doubt. 

  • To seize or shake by the throat, especially of a dog or wolf. 

  • Disturb the peace of mind of; afflict with mental agitation or distress. 

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