brigandine vs gambeson

brigandine

noun
  • A coat of armor for the body, consisting of scales or plates, sometimes overlapping each other, generally of metal, and sewn or riveted to linen or other material. 

gambeson

noun
  • A defensive garment formerly in use for the body, made of cloth stuffed and quilted, often worn as padding under armor. 

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