coat of mail vs cuirass

coat of mail

noun
  • A defensive garment made of metal scales or interlinked metal rings. 

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. 

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