Barb vs Ebony

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. 

Ebony

name
  • A female given name from English. 

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