cheelam vs hookah

cheelam

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

hookah

noun
  • A pipe with a long flexible tube that draws the smoke through water, traditionally used for smoking tobacco, which is often flavored. 

  • A tank-less surface air compressor pump and umbilical piping system that supplies air to a diving mask 

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