fracture vs secern

fracture

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

  • To break, or cause something to break. 

noun
  • A break in bone or cartilage. 

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

  • A fault or crack in a rock. 

secern

verb
  • Of a person or thing: to become separated from others. 

  • To secrete a substance. 

  • To separate (something from other things) in the mind; to discriminate, to distinguish. 

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