awful vs unthreatening

awful

adj
  • Exceedingly great; usually applied intensively. 

  • Very bad. 

adv
  • Very, extremely. 

  • Awfully; dreadfully; terribly. 

unthreatening

adj
  • Not threatening 

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