manteau vs pallium

manteau

noun
  • A cloak or gown, especially of a kind popular with women in the 17th and 18th centuries. 

  • A long, loose-fitting coat worn by Iranian Muslim women based off the trenchcoat, originally worn with a square Arabic-style hijab and in plain colours, and often associated with liberal politics. 

pallium

noun
  • A large cloak worn by Greek philosophers and teachers. 

  • The mantle of a mollusc. 

  • A woolen liturgical vestment resembling a collar and worn over the chasuble in the Western Christian liturgical tradition, conferred on archbishops by the Pope, equivalent to the Eastern Christian omophorion. 

  • The cerebral cortex. 

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