廊下

1. Origins, structure, and basic meaning

• Structure: 廊下, read ろうか, means a corridor connecting rooms or other parts of a building.
• Basic usage: It is used for corridors in places such as schools and offices, including locations along them.

2. Common pitfalls and similar expressions

• A corridor or a passage
  • 廊下 refers to a corridor in a building; 通路 more broadly refers to a passage people use, indoors or outdoors.
• The far end of a corridor
  • 廊下の突き当たり means the end reached by following a corridor until it is no longer possible to go straight ahead.