curly bracket vs squiggly

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. 

squiggly

noun
  • A wavy underline used to indicate an error in text or source code. 

adj
  • Not straight; wavy and irregular. 

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