kerf vs undercut

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. 

undercut

noun
  • The notch cut in a tree to direct its fall when being felled. 

  • The underside of a sirloin of beef; the fillet. 

  • A cut made in the lower part of something; the material so removed. 

  • A hairstyle that is shaved or clipped short on the sides and kept long on the top. 

  • A blow dealt upward. 

  • A section of a mold or pattern with negative draft angle 

  • A pit stop strategy in which a driver seeks to gain an advantage over someone by pitting before them and using fresh tyres to make up time. 

verb
  • To undermine. 

  • To sell (something) at a lower price, or to work for lower wages, than a competitor. 

  • To create an overhang by cutting away material from underneath. 

  • To strike a heavy blow upward. 

adj
  • Designed so as to cut from the underside. 

  • Having the parts in relief cut under. 

  • Produced by undercutting. 

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