bran vs casing

bran

noun
  • The broken coat of the seed of wheat, rye, or other cereal grain, separated from the flour or meal by sifting or bolting; the coarse, chaffy part of ground grain. 

  • The European carrion crow. 

casing

noun
  • The decorative trim around a door or window. 

  • That which encloses or encases. 

  • A metal pipe used to line the borehole of a well. 

  • The state of letter case across a whole phrase or whole lines of text; the collective state/arrangement of uppercase and lowercase letters. 

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