cheelam vs chillum

cheelam

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

chillum

noun
  • The part of such a pipe that contains the tobacco and charcoal balls. 

  • A conical pipe used for smoking marijuana, usually made of fired clay, porcelain, soapstone, glass or, more rarely, wood. 

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