hauberk vs suit of armour

hauberk

noun
  • A similar shirt of scale mail, plate, leather, or other armor material. 

  • A coat of mail; especially, the long coat of mail of the European Middle Ages, as contrasted with the habergeon, which is shorter and sometimes sleeveless. 

suit of armour

noun
  • A collection of garments, usually made of metal, worn over the body for protection in battle from weapons. 

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