cleft vs schism

cleft

noun
  • An opening, fissure, or V-shaped indentation made by or as if by splitting. 

  • A piece made by splitting. 

  • A disease of horses; a crack on the band of the pastern. 

adj
  • split, divided, or partially divided into two. 

verb
  • To syntactically separate a prominent constituent from the rest of the clause that concerns it, such as threat in "The threat which I saw but which he didn't see, was his downfall." 

schism

noun
  • A split or separation within a group or organization, typically caused by discord. 

  • a split within Christianity whereby a group no longer recognizes the Bishop of Rome as the head of the Church, but shares essentially the same beliefs with the Church of Rome. In other words, a political split without the introduction of heresy. 

  • A formal division or split within a religious body. 

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