birdbrain vs turkey

birdbrain

noun
  • Someone who is not intelligent. 

turkey

noun
  • A foolish or inept person. 

  • The flesh or meat of this bird eaten as food. 

  • A bird in the genus Meleagris with a fan-shaped tail and wattled neck, especially the wild turkey (Meleagris gallopavo, now domesticated). 

  • With a distinguishing word: a bird resembling the Meleagris gallopavo (for example, the brush turkey or bush turkey (Alectura lathami), and the water turkey (Anhinga anhinga)). 

  • A patient feigning symptoms; a person faking illness or injury; a malingerer. 

  • A failure. 

  • An act of throwing three strikes in a row. 

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