Refers to the building material; commonly used in compounds like 煉瓦造り (brick construction) or 煉瓦色 (brick red).
この建物はレンガでできている。
This building is made of brick.
庭にレンガを敷いて小道を作った。
I laid bricks in the garden to make a path.
The workers were laying bricks for the wall.
There are many old brick warehouses in this town.
The inside of the café had a stylish atmosphere thanks to the brick wall.
She was wearing a brick-red sweater.
firebrick
paving brick
chamotte brick; fireclay brick