deadlock vs fracture

deadlock

verb
  • To cause or come to a deadlock. 

noun
  • A standstill resulting from the opposition of two evenly matched forces; a stalemate or impasse. 

  • An inability to continue due to two programs or devices each requiring a response from the other before completing an operation. 

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