gloomy vs ominous

gloomy

adj
  • Suffering from gloom; melancholy; dejected. 

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

noun
  • Someone or something that is gloomy or pessimistic. 

ominous

adj
  • Specifically, giving indication of a coming ill; being an evil omen 

  • Of or pertaining to an omen or to omens; being or exhibiting an omen; significant. 

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