gloomy vs worrywart

gloomy

noun
  • Someone or something that is gloomy or pessimistic. 

adj
  • Suffering from gloom; melancholy; dejected. 

  • Not very illuminated; dim because of darkness, especially when appearing depressing or frightening. 

worrywart

noun
  • A person who worries excessively, especially about unimportant matters. 

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