awful vs ominous

awful

adj
  • Very bad. 

  • Exceedingly great; usually applied intensively. 

adv
  • Very, extremely. 

  • Awfully; dreadfully; terribly. 

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 awful and ominous occurred in a corpus of books? (source: Google Ngram Viewer )