cleft vs notch

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." 

notch

noun
  • An indentation. 

  • A mountain pass; a defile. 

  • A discontinuous change in a taxation schedule. 

  • Woman. 

  • Such a cut, used for keeping a record. 

  • A level or degree. 

  • A portion of a mobile phone that overlaps the edge of the screen, used to house camera, sensors etc. while maximizing screen space. 

verb
  • To cut a notch in (something). 

  • To achieve (something); to add to one's score or record of successes. 

  • To join by means of notches. 

  • To record (a score or similar) by making notches on something. 

  • To fit (an arrow) to a bow by means of the notch cut at the end of the arrow; to nock. 

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