fracture vs irrupt

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. 

irrupt

verb
  • To break into. 

  • To enter forcibly or uninvited. 

  • To rapidly increase or intensify. 

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