Brownie vs biddy

Brownie

noun
  • A junior Girl Scout. 

  • A junior Girl Guide. 

name
  • A nickname of the surname Brown. 

biddy

noun
  • A woman, especially an old woman; especially one regarded as fussy or mean or a gossipy busybody. 

  • An Irishwoman. 

  • An attractive girl. 

  • breasts (when used in the phrase "tig biddies" derived from "big tiddies") 

  • A name used in calling a hen or chicken, often as "biddy-biddy-biddy". 

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