chador vs muffler

chador

noun
  • A loose robe, made from a single cloth, worn as a combination head covering, veil and shawl by Muslim women, especially in Iran. 

muffler

noun
  • A type of scarf. 

  • Part of the exhaust pipe of a car that dampens the noise the engine produces. 

  • A silencer or suppressor fitted to a gun. 

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