send shivers down someone's spine vs startle

send shivers down someone's spine

verb

  • To terrify; to make someone feel extremely nervous. 

startle

verb

  • To excite by sudden alarm, surprise, or apprehension; to frighten suddenly and not seriously; to alarm; to surprise. 

  • To move suddenly, or be excited, on feeling alarm; to start. 

noun

  • A sudden motion or shock caused by an unexpected alarm, surprise, or apprehension of danger. 

How often have the words send shivers down someone's spine and startle occurred in a corpus of books? (source: Google Ngram Viewer )