Brownie vs chick

Brownie

noun
  • A junior Girl Guide. 

  • A junior Girl Scout. 

name
  • A nickname of the surname Brown. 

chick

noun
  • A young, typically attractive, woman or teenage girl. 

  • A screen or blind made of finely slit bamboo and twine, hung in doorways or windows. 

  • A young chicken. 

  • A friendly fighter aircraft. 

  • A young bird. 

verb
  • To compress the lips and then separate them quickly, resulting in a percussive noise. 

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