The difference between stone and stone?

Stone: rocks or substances similar to rocks used as materials for building, carving, etc. Stone refers to all the stones that can be used as materials, such as granite.

Stone: Stone (Stone) as a high-grade building decoration materials, most people can be used to decorate the type of stone, performance are not very clear. Currently common stone on the market are marble, granite, terrazzo, synthetic stone four, of which, marble and to alabaster for the best; granite than marble hard; terrazzo is cement, concrete and other raw materials forging and become; synthetic stone is a natural stone crushed stone as raw materials, together with adhesives and so on by the pressurized, polished and become. The latter two are not as strong as natural stone because they are made artificially.