noun
concrete-block wall; cinder-block fence
Refers to a wall or fence made of concrete blocks, commonly seen around houses, gardens, or construction sites.
家の周りにブロック塀を立てた。
We put up a concrete-block wall around the house.
地震でブロック塀が倒れた。
The concrete-block wall collapsed in the earthquake.
塀 is a general term for a fence or wall, while ブロック塀 specifically refers to one made of concrete blocks.
コンクリートブロック is the material (concrete block), whereas ブロック塀 is the wall or fence built from those blocks.
Compound of ブロック (from English 'block', referring to concrete blocks) and 塀 (へい, 'fence' or 'wall').