gobstopper vs jawbreaker

gobstopper

noun
  • A type of hard long-lasting candy, usually spherical in shape. 

jawbreaker

noun
  • A large, extremely hard, boiled candy, typically spherical. 

  • A long, hard-to-pronounce word. 

  • A hard blow to the side of the face. 

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