grain vs woodchip

grain

noun
  • A thin piece of metal, used in a mould to steady a core. 

  • The French grain of ¹⁄₉₂₁₆ livre, equivalent to 53.11 mg at metricization and equal to exactly 54.25 mg from 1812–1839 as part of the mesures usuelles. 

  • A branch of a tree; a stalk or stem of a plant. 

  • Similar seeds from any food crop, e.g., buckwheat, amaranth, quinoa. 

  • Visual texture in processed photographic film due to the presence of small particles of a metallic silver, or dye clouds, developed from silver halide that have received enough photons. 

  • One of the branches of a valley or river. 

  • The harvested seeds of various grass food crops eg: wheat, corn, barley. 

  • Temper; natural disposition; inclination. 

  • A blade of a sword, knife, etc. 

  • A region within a material having a single crystal structure or direction. 

  • A single particle of a substance. 

  • The carat grain of ¹⁄₄ carat as a measure of gold purity, creating a 96-point scale between 0% and 100% purity. 

  • An iron fish spear or harpoon, with a number of points half-barbed inwardly. 

  • The English grain of ¹⁄₅₇₆₀ troy pound or ¹⁄₇₀₀₀ pound avoirdupois, now exactly 64.79891 mg. 

  • The solid piece of fuel in an individual solid-fuel rocket engine. 

  • A single seed of grass food crops. 

  • The hair side of a piece of leather, or the marking on that side. 

  • Any of various small units of length originally notionally based on a grain's width, variously standardized at different places and times. 

  • The remains of grain, etc., after brewing or distillation; hence, any residuum. Also called draff. 

  • A rounded prominence on the back of a sepal, as in the common dock. 

  • The metric, carat, or pearl grain of ¹⁄₄ carat used for measuring precious stones and pearls, now exactly 50 mg. 

  • The crops from which grain is harvested. 

  • A linear texture of a material or surface. 

  • A reddish dye made from the coccus insect, or kermes; hence, a red color of any tint or hue, as crimson, scarlet, etc.; sometimes used by the poets as equivalent to Tyrian purple. 

verb
  • To remove the hair or fat from a skin. 

  • To feed grain to. 

  • To texture a surface in imitation of the grain of a substance such as wood. 

  • To soften leather. 

  • To make granular; to form into grains. 

  • To yield fruit. 

  • To form grains, or to assume a granular form, as the result of crystallization; to granulate. 

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