Malay apple vs wax apple

Malay apple

noun
  • A myrtaceous tree (Syzygium malaccense) native to Malaysia and Australia, or the fruit of this tree. 

wax apple

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

  • the fruit of this plant 

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