Curio shelves are pieces of furniture used to display and store items of interest. They are often made of wood or metal and can be found in many shapes and sizes. The two most common types of curio shelves are whatnots (8 letters) and etageres (7 letters). Whatnots are typically tall, narrow shelves with multiple levels, while etageres are usually wider and have fewer levels. Both types of shelves are great for displaying collectibles, artwork, and other decorative items.