buckle vs jawbreaker

buckle

noun
  • A contorted expression, as of the face. 

  • A clasp used for fastening two things together, such as the ends of a belt, or for retaining the end of a strap. 

  • A curl of hair, especially a kind of crisp curl formerly worn; also, the state of being curled. 

  • An upward, elongated displacement of a roof membrane frequently occurring over insulation or deck joints. A buckle may be an indication of movement with the roof assembly. 

  • The brisure of an eighth daughter. 

  • A cake baked with fresh fruit and a streusel topping. 

  • A distortion, bulge, bend, or kink, as in a saw blade or a plate of sheet metal. 

verb
  • To buckle down; to apply oneself. 

  • To distort or collapse under physical pressure; especially, of a slender structure in compression. 

  • To give in; to react suddenly or adversely to stress or pressure (of a person). 

  • To make bend; to cause to become distorted. 

  • To yield; to give way; to cease opposing. 

  • To fasten using a buckle. 

  • To unite in marriage. 

jawbreaker

noun
  • A hard blow to the side of the face. 

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

  • A long, hard-to-pronounce word. 

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