chandoo vs opium

chandoo

noun
  • An extract or preparation of opium, used in China and India for smoking. 

opium

noun
  • A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of the opium poppy, Papaver somniferum, and containing alkaloids such as morphine, codeine, and papaverine. 

  • Anything that numbs or stupefies. 

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