scutum vs suit of armor

scutum

noun
  • An oblong shield made of boards or wickerwork covered with leather, with sometimes an iron rim; carried chiefly by the heavily armed infantry of the Roman army. 

  • The kneecap. 

  • One of the two lower valves of the operculum of a barnacle. 

  • A scute. 

  • A shield-like protection, such as the scutum protecting the back of a hard tick (cf. alloscutum, conscutum) 

suit of armor

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

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