catch napping vs scare

catch napping

verb
  • To surprise; to take advantage of the lack of watchfulness of. 

scare

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

adj
  • lean; scanty 

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

  • A minor fright. 

  • A device or object used to frighten. 

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