Both porcelain and bone china are often used as tableware, with the latter generally reserved for more formal occasions and special events. Bone china is considered to be of higher quality and more luxurious than porcelain, so it is often used in high-end restaurants.
To summarize, porcelain and bone china have several similarities in composition and use, but there are also differences that distinguish them. Porcelain is known for its strength, durability, and versatility, while bone china is known for its fineness, translucency, lightness, and high-grade luxury.