mountain apple vs ohia

mountain apple

noun
  • The Malay apple or pommerac (Syzygium malaccense). 

  • Used other than figuratively or idiomatically: see mountain, apple. 

ohia

noun
  • the Malay apple, Syzygium malaccense, (native to Southeast Asia, introduced throughout the tropics). 

  • in Hawaii: the lehua, Metrosideros polymorpha (native to Hawaii) 

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