bracer vs curly bracket

bracer

noun
  • Something bracing; a stimulant. 

  • That which braces, binds, or makes firm; a band or bandage. 

  • A medicine, as an astringent or a tonic, which gives tension or tone to any part of the body. 

  • A covering to protect the arm of the bowman from the vibration of the string. 

  • Armor for the forearm; a brassard. 

curly bracket

noun
  • Either of the two characters { and }, i.e., left curly bracket { and right curly bracket }, with the shape of a curved, pointed line, having various uses in math, music, computer programming and chemistry. 

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