"Ceramic" and "porcelain" mean almost exactly the same thing. Most English speakers use them interchangably. Toilets, sinks, and dolls are usually called "porcelain". Dishes are usually called "china". Decorative statues and other things are usually called "ceramic". But it's okay to use "ceramic" and "porcelain" to mean the same thing. (Technically, porcelain is a specific type of ceramic, but unless you're a sculptor or something it doesn't matter.)

Ceramic used in industrial productions.....usually in electric....for insulation. Porcelain used in home dishes, cups,................