fall down vs fracture

fall down

verb
  • To fall to the ground. To collapse. 

  • To fail. 

  • To sail or drift toward the mouth of a river or other outlet. 

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 fall down and fracture occurred in a corpus of books? (source: Google Ngram Viewer )