The main difference between porcelain and ceramic would be the quality. Porcelain has a smoother and whiter finish compared to ceramic. Because of porcelain require higher temperature while baking, porcelain also has more durability compared to ceramic. Another difference between porcelain and ceramic is the thickness of the clay sides. Porcelain are thin enough to be translucent when held up to light and realtively lightweight. Meanwhile, ceramic have thicker sides, they are always opaque, and they are comparatively heavier.