caryopsis vs rye

caryopsis

noun
  • A type of fruit in which the fruit skin is stuck to the seed coat; especially the grain of a cereal. 

rye

noun
  • The grass Secale cereale from which the grain is obtained. 

  • Caraway (from the mistaken assumption that the whole seeds, often used to season rye bread, are the rye itself) 

  • Ryegrass, any of the species of Lolium. 

  • Rye bread. 

  • A grain used extensively in Europe for making bread, beer, and (now generally) for animal fodder. 

  • Rye whiskey. 

  • A drink of rye. 

  • A disease of hawks. 

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