pipfruit vs pome

pipfruit

noun
  • Synonym of pome 

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 pipfruit and pome occurred in a corpus of books? (source: Google Ngram Viewer )