khalat vs peignoir

khalat

noun
  • A type of native gown worn in parts of Central Asia, historically awarded as a robe of honor. 

  • A long, close-fitting coat with shawl collars and pockets, worn by Ashkenazi Jewish men in Eastern Europe until the early 20th century 

peignoir

noun
  • A cape worn to protect the clothes at the barbers / hairdressers 

  • A long outer garment for women, usually sheer and made of chiffon and often sold with matching nightgown, negligee or underwear 

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