門

1. Origins, structure, and basic meaning

• Structure: 門（もん） means a gate at the entrance to a school, garden, or similar place.
• Basic usage: Use it for a gate's opening time or a scene of entering through it.

2. Common pitfalls and similar expressions

• Passing through a gate
  • 門をくぐる means passing through the gate to the inside or the other side.
  • 門を開ける means opening the gate itself.