cuirass vs shelter

cuirass

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

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

  • The breastplate taken by itself. 

shelter

verb
  • To provide cover from damage or harassment; to shield; to protect. 

  • To take cover. 

noun
  • A refuge, haven or other cover or protection from something. 

  • An institution that provides temporary housing for homeless people, battered women, etc. 

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