make someone's blood run cold vs scare the pants off

make someone's blood run cold

verb
  • To cause a person to feel fear, horror, dread, or strong foreboding; to chill. 

scare the pants off

verb
  • To scare or startle someone thoroughly. 

How often have the words make someone's blood run cold and scare the pants off occurred in a corpus of books? (source: Google Ngram Viewer )