awful vs spine-chilling

awful

adj
  • Exceedingly great; usually applied intensively. 

  • Very bad. 

adv
  • Very, extremely. 

  • Awfully; dreadfully; terribly. 

spine-chilling

adj
  • Inducing fear or nervousness; frequently used of a work of fiction. 

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