cheelam vs water pipe

cheelam

noun
  • An earthen bowl in which tobacco is kept and smoked through its hollow neck. 

water pipe

noun
  • A device for smoking, such as a hookah or bong, in which the smoke is drawn through a container of water before inhaling. 

  • A pipe that is a conduit for water; an essential element of plumbing. 

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