cane sugar vs jaggery

cane sugar

noun
  • Sugar obtained from the sugar cane (Saccharum officinarum). 

jaggery

noun
  • A small-scale production plant that processes sugar cane to make sugar. 

  • A traditional dark-brown unrefined sugar made from palm tree sap which is used throughout South and Southeast Asia; (by extension) other types of unrefined sugar. 

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