門柱

1. Origins, structure, and basic meaning

• Structure: 門柱, read もんちゅう, means a gatepost.
• Basic usage: It is used for posts on either side of a gate, their surfaces, or the gap between them.

2. Common pitfalls and similar expressions

• Reading the whole word
  • 柱 is read ちゅう in this word.
• Surface and spacing
  • In the example, 門柱に marks the surface where the house's name is carved.
  • 左右の門柱の間隔 means the distance between the left and right gateposts.