Minecraft wiki entry for Clay_(disambiguation), associated text: Clay, a naturally occurring block
Clay Ball, an item received from mining clay blocks
Brick, an item created by smelting clay balls
Bricks, a block of bricks, useful as a strong building material
Terracotta, a block received from smelting clay blocks and found in Badlands
Glazed Terracotta, a decorative block made by smelting stained terracotta