braying vs piercing

braying

noun
  • An act or sound of braying. 

piercing

noun
  • An item of jewellery designed to be fitted through a piercing (sense 2). 

  • A hole made in the body so that jewellery can be worn through it. 

adj
  • Appearing to look deeply into; penetrating. 

  • Of sound, loud and sharp; shrill. 

  • Of temperature, extremely cold so that it penetrates through clothing and shelter. 

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