caryopsis vs pome

caryopsis

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

pome

noun
  • A type of fruit in which the often edible flesh arises from the swollen base of the flower and not from the carpels. 

  • A ball of silver or other metal, filled with hot water and used by a Roman Catholic priest in cold weather to warm his hands during the service. 

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