A microkernel implements all drivers as user-space programs, and implements core features like IPC in the kernel itself. A monolithic kernel, however, implements the drivers as a part of the kernel...
Fine bone china is more delicate than porcelain, with a warmer, translucent finish. It is typically more expensive than porcelain. Fine china is produced without the inclusion of bone ash from similar materials to porcelain.
However, porcelain, pottery, and stoneware may also be referred to asceramics. Non-porcelain ceramic is typically used for more casual dinnerware, whereas porcelain is commonly used in display objects and other decorative items. A ceramic item is not necessarily of a lesser quality than a porcelain item.