sliver vs woodchip

sliver

noun
  • A strand, or slender roll, of cotton or other fiber in a loose, untwisted state, produced by a carding machine and ready for the roving or slubbing which precedes spinning. 

  • A narrow high-rise apartment building. 

  • Specifically, a splinter caught under the skin. 

  • A long piece cut or rent off; a sharp, slender fragment; a splinter. 

  • Bait made of pieces of small fish. Compare kibblings. 

  • A small amount of something; a drop in the bucket; a shred. 

verb
  • To cut or divide into long, thin pieces, or into very small pieces; to cut or rend lengthwise; to slit. 

woodchip

noun
  • A small mechanically produced piece (chip) of wood, generally from 0.5 to 10 cm in diameter, used primarily as raw material for pulp, paper and construction boards, as well as fuel and mulch. 

  • A small fibre of wood; especially such material as used to make ingrain wallpaper, aka woodchip wallpaper. See Wikipedia article on ingrain wallpaper. 

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