別棟

1. Origins, structure, and basic meaning

• Structure: 別棟(べつむね) means a separate building apart from the main house or another building.
• Basic usage: It is used to explain that a guest room or storage room is in a different building from the main one.

2. Common pitfalls and similar expressions

• Separate room and separate building
  • 別室(べっしつ) means another room, which may be inside the same building.
  • 別棟 indicates that the building itself, not merely a room, is separate.
• The main house
  • 母屋(おもや) means the main house; in the example, a garden separates it from the other building.