bookshelf vs bric-a-brac

bookshelf

noun
  • A shelf or shelves for storing books for easy visual reference. 

bric-a-brac

noun
  • Any collection containing a variety of miscellaneous items; a hodgepodge, an olio. 

  • Small ornaments and other miscellaneous display items of little value. 

How often have the words bookshelf and bric-a-brac occurred in a corpus of books? (source: Google Ngram Viewer )