blackthorn vs jambul

blackthorn

noun
  • A large shrub or small tree, Prunus spinosa, that is native to Europe, western Asia, and north Africa. It has a dark bark and bears thorns. 

  • A stick or staff taken from this tree. 

jambul

noun
  • An evergreen tropical tree, Syzygium cumini. 

  • The plum-like fruit of this tree. 

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