bombshell vs firestarter

bombshell

noun
  • A bomb or artillery shell designed to explode on impact. 

  • Something that is very surprising, shocking, amazing or sensational. 

  • Someone who is very attractive; a sex symbol. 

firestarter

noun
  • A tool used to start a fire. 

  • One who starts fires. 

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