cuirass vs suit of armour

cuirass

noun
  • A piece of defensive armor, covering the body from the neck to the girdle. 

  • The breastplate taken by itself. 

verb
  • To cover with defensive armor; to armor-plate. 

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 cuirass and suit of armour occurred in a corpus of books? (source: Google Ngram Viewer )