athenaeum vs bookcase

athenaeum

noun
  • The reading room or library of such an association; (by extension) any reading room or library. 

  • An association for the advancement of learning, particularly in science or literature. 

  • A literary or scientific periodical, especially one similar to the London Athenaeum. 

bookcase

noun
  • A piece of furniture for the storage and display of books. 

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