banyan vs nightrobe

banyan

noun
  • A type of loose gown worn in India. 

  • An Indian trader, merchant, cashier, or money changer. 

  • A tropical Indian fig tree, Ficus benghalensis, that has many aerial roots. 

  • A vest; an undershirt; a singlet. 

nightrobe

noun
  • A robe to be worn at night; a nightgown. 

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