apiary vs rookery

apiary

noun
  • A place where bees and their hives are kept. 

rookery

noun
  • A colony of breeding birds or other animals. 

  • A place where criminals congregate, often an area of a town or city. 

  • A crowded tenement. 

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