Brownie vs Ginger

Brownie

name

  • A nickname of the surname Brown. 

noun

  • A junior Girl Scout. 

  • A junior Girl Guide. 

Ginger

name

  • A male nickname. 

  • A given name for animals having ginger- or orange-coloured fur or feathers. 

  • A female given name from English and nickname. 

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