ballbag vs cocksack

ballbag

noun

  • The scrotum. 

  • A thoughtless and ignorant individual. 

cocksack

noun

  • The scrotum. 

  • Clothing that covers the scrotum in a manner similar to a codpiece. 

  • A term of abuse. 

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