jambul vs wax apple

jambul

noun
  • The plum-like fruit of this tree. 

  • An evergreen tropical tree, Syzygium cumini. 

wax apple

noun
  • the fruit of this plant 

  • a tropical plant, Syzygium samarangense, bearing an edible fruit 

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