河川敷

1. Origins, structure, and basic meaning

• Structure: 河川敷 is read as かせんじき and is flat riverside land or a floodplain that may be inundated when water rises.
• Basic usage: Use 河川敷で家族が遊ぶ for families playing on a river floodplain and 河川敷への立ち入りを禁じる for prohibiting entry to the river area.

2. Common pitfalls and similar expressions

• Distinction between 河川敷 and 河岸
  • The headword denotes the broad flat land within a river zone, while the comparison term denotes the bank or edge directly alongside the water.