軒下

1. Origins, structure, and basic meaning

• Structure: 軒下(のきした) is a noun for the sheltered space beneath the part of a roof that extends beyond a building.
• Basic usage: Entering for shelter appears in 店の軒下に入る, while a nest's location appears in 軒下に巣がある.

2. Common pitfalls and similar expressions

• Boundary outside the building
  • It does not mean the whole interior; it is the outside space covered by the projecting eaves.
• Place particle
  • Both a destination and a place of existence can appear as 軒下に, using に.