jawbreaker vs mouthful

jawbreaker

noun
  • A long, hard-to-pronounce word. 

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

  • A hard blow to the side of the face. 

mouthful

noun
  • Something difficult to pronounce or say. 

  • The amount that will fit in a mouth. 

  • A tirade of abusive language. 

  • Quite a bit. 

adj
  • Bombastic or awkward. 

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