surprise vs whammy

surprise

noun
  • Something unexpected. 

  • The feeling that something unexpected has happened. 

verb
  • To attack unexpectedly. 

  • To take unawares. 

  • To do something to (a person) that they are not expecting, as a surprise. 

  • To cause (someone) to feel unusually alarmed or delighted by something unexpected. 

  • To undergo or witness something unexpected. 

  • To cause surprise. 

whammy

noun
  • a serious or devastating setback 

  • an evil spell; a curse or hex 

  • the vibrato system of an electric guitar, or just its lever (whammy bar) 

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