loquat vs plum blossom

loquat

noun
  • The Eriobotrya japonica tree. 

  • The fruit of this tree. It is as large as a small plum, but grows in clusters, and contains four or five large seeds. 

plum blossom

noun
  • The blossom of the tree. 

  • A tree, Prunus mume, native to East Asia bearing an apricot-like fruit; the Japanese apricot or Chinese plum. 

  • Used other than figuratively or idiomatically: see plum, blossom. 

How often have the words loquat and plum blossom occurred in a corpus of books? (source: Google Ngram Viewer )