bookcase vs shrank

bookcase

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

shrank

noun
  • A large highly decorative German/Dutch-style piece of furniture, which combines aspects of a clothing wardrobe, curio, and cabinet. 

verb
  • simple past tense of shrink 

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