Barb vs Char

Barb

name

  • A diminutive of the female given name Barbara. 

  • A surname. 

noun

  • A fan of the American singer Nicki Minaj, especially a female one. 

Char

name

  • A nickname for Charlene 

  • A nickname for Charlotte 

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