上釉[uwagusuri] glaze
灰釉[haigusuri] ash glaze (type of fundamental glaze used in ancient times made from the ashes of raw materials such as unhulled rice, straw, oak and pine)
銅釉[douyuu] copper glaze (pottery)

無釉[muyuu] unglazed (e.g. pottery)
施釉[seyuu] glazing (ceramics)