A wall constructed in glazed-headed Flemish bond brickwork pattern with many shades and lengths. Block is a similar term referring to an oblong building device composed of clay or concrete, but is usually bigger than a brick. Lightweight bricks (also called light-weight blocks) are made out of expanded clay combination. https://trevors1fgg.jiliblog.com/92960535/the-smart-trick-of-building-a-building-that-no-one-is-discussing