墙壁 qiángbì wall
How to remember 墙壁: 墙 wall + 壁 partition = wall.
Characters
How it is used
- A wall (of a room or building), as a surface: 墙壁上挂着画 (qiángbì shàng guà zhe huà) paintings hang on the wall.
- The two-syllable 墙壁 is slightly more written/rounded than bare 墙; both mean wall, but 墙壁 emphasizes the wall surface indoors.
- Not for freestanding barriers like 城墙 (city wall) - that stays 墙.