crumb vs woodchip

crumb

noun
  • A small piece of other material, such as rubber. 

  • A mixture of sugar, cocoa and milk, used to make industrial chocolate. 

  • A nobody; a worthless person. 

  • A body louse (Pediculus humanus). 

  • The soft internal portion of bread, surrounded by crust. 

  • A bit, small amount. 

  • A small piece which breaks off from baked food (such as cake, biscuit or bread). 

verb
  • To cover with crumbs. 

  • To break into crumbs or small pieces with the fingers; to crumble. 

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