matchwood vs woodchip

matchwood

noun
  • wood, often in the form of splinters, suitable for making matches 

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 matchwood and woodchip occurred in a corpus of books? (source: Google Ngram Viewer )