peach tree vs persimmon

peach tree

noun
  • Prunus persica, a fruit tree of the genus Prunus, that bears peaches. 

persimmon

noun
  • A type of fruit, of orange colour, very sweet, quite astringent when immature. 

  • The tree this fruit grows on, generally one of two species of ebony: Diospyros kaki (Asian) or Diospyros virginiana (North American). 

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