avian vs chook

avian

noun
  • A bird. 

  • Someone who roleplays or describes themselves as being a bird or bird-like animal character with human characteristics. 

  • A bird-like or flying creature. 

adj
  • Characteristic of or pertaining to birds, or to bird-like or flying creatures. 

chook

noun
  • A chicken, especially a hen. 

  • A cooked chicken; a chicken dressed for cooking. 

intj
  • A call made to chickens. 

  • An imitation of the call of a chicken. 

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