ball up vs fracture

ball up

verb
  • To ruin or botch. 

  • To coil up into a ball. 

  • To hunch over and pull in one's arms and legs. 

  • To crush into a ball shape. 

fracture

verb
  • To break, or cause something to break. 

  • To amuse (a person) greatly; to split someone's sides. 

noun
  • A break in bone or cartilage. 

  • An instance of breaking, a place where something has broken. 

  • A fault or crack in a rock. 

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