naga vs pipe snake

naga

noun
  • A member of a class of semi-divine creatures, often taking the form of a very large snake and associated with water. 

  • A loincloth. 

pipe snake

noun
  • Synonym of plumber's snake 

  • Shieldtail snake, family Uropeltidae. 

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