jackfruit vs soursop

jackfruit

noun
  • The large fruit from this tree. 

  • A tree, Artocarpus heterophyllus, of the Moraceae family, which produces edible fruit. 

soursop

noun
  • The tart, spiny, yellow-green fruit of this tree. 

  • A small tropical evergreen tree, Annona muricata. 

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