cherry plum vs ume

cherry plum

noun
  • Prunus cerasifera, a deciduous ornamental Eurasian shrub or small tree, having white flowers and small red to yellow edible fruits. 

  • The fruit of such a tree. 

ume

noun
  • Japanese apricot, a species of Asian plum, Prunus mume. 

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