petunia vs wax apple

petunia

noun
  • Any of the flowering plants of genus Petunia, of which most garden varieties are hybrids. 

  • a homosexual 

  • A dark purple colour, like that of some petunia flowers. 

adj
  • Of a dark purple colour, like that of some petunia flowers. 

wax apple

noun
  • the fruit of this plant 

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

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