cuirass vs plate 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. 

plate armour

noun
  • Metallic armour made of large pieces or plates. 

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