壁面

1. Origins, structure, and basic meaning

• Structure: 壁面 (へきめん) is a compound noun for the broad surface of a wall.
• Basic usage: 駅の壁面に案内図が掲示される marks the location of a posted map, while 建物の壁面を洗浄する makes the surface the object cleaned by a worker.

2. Common pitfalls and similar expressions

• Posting location and cleaning object
  • 壁面に marks the surface occupied by the guide map, while 壁面を marks the surface directly affected by cleaning. Keep the wall structure distinct from its surface area.