cold feet vs scare

cold feet

noun
  • A feeling of nervousness or anxiousness causing one to reconsider a decision about an upcoming event. 

  • Used other than figuratively or idiomatically: see cold, feet. 

scare

noun
  • A cause of slight terror; something that inspires fear or dread. 

  • A minor fright. 

  • A device or object used to frighten. 

adj
  • lean; scanty 

verb
  • To frighten, terrify, startle, especially in a minor way. 

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