chilling vs spine-chilling

chilling

adj
  • Causing mild fear. 

  • Becoming cold. 

  • Causing cold. 

noun
  • The act by which something is chilled. 

spine-chilling

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

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