A 12'' plate pairs with a 6'' bowl for any number of possibilities. The first that comes to mind is chips or veggies and dip. They could be used together or separately. I'm not sure that they were designed for that purpose, but I bought them as a pair and it made perfect sense to me. These pieces are in the Hazel Atlas pattern Moroccan Amethyst, the name describes the color to perfection. The circular pieces have square bases. They're in excellent condition.
Moroccan Amethyst Hazel Atlas Chip and Dip Plate and Bowl - g