intersection vs kerf

intersection

noun
  • The pullback of a corner of monics. 

  • The junction of two (or more) paths, streets, highways, or other thoroughfares. 

  • The element where two or more straight lines of synchronized skaters pass through each other.http://www.isu.org/vsite/vcontent/content/transnews/0,10869,4844-128590-19728-18885-295370-3787-4771-layout160-129898-news-item,00.html 

  • The point or set of points common to two geometrical objects (such as the point where two lines meet or the line where two planes intersect). 

  • The set containing all the elements that are common to two or more sets. 

  • Any overlap, confluence, or crossover. 

kerf

noun
  • The flattened, cut-off end of a branch or tree; a stump or sawn-off cross-section. 

  • The portion or quantity (e.g. of wood, hay, turf, wool, etc.) removed or cut off in a given stroke. 

  • The distance between diverging saw teeth. 

  • The groove or slit created by cutting or sawing something; an incision. 

verb
  • To cut a piece of wood or other material with several kerfs to allow it to be bent. 

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