溝

1. Origins, structure, and basic meaning

• Structure: 溝(みぞ) means a ditch or groove and can figuratively denote a rift between people.
• Basic usage: It describes clearing a roadside ditch so that rainwater can flow through.
  • 雨水が流れるよう道路脇の溝を掃除した。

2. Common pitfalls and similar expressions

• A physical groove and a relational rift
  • 道路脇の溝 is a physical ditch, while 二人の間の溝 is a rift caused by differences in thoughts or feelings.