From Minecraft Wiki
Brick or Bricks may refer to:
Brick: An item made from clay and used in making bricks.
Nether Brick: An item made from netherrack used for making nether bricks.
Bricks: A block made from bricks.
Stone Bricks: A block made from stone and found in strongholds.
Nether Brick: A block made from nether brick items and found naturally in nether fortresses.
Red Nether Brick: A variant of the previous block.
Prismarine Bricks: A decorative form of prismarine.
End Stone Bricks: A block made from end stone and making up the end cities.
Brick may also be used as a general term for all blocks.