川上

1. Origins, structure, and basic meaning

• Structure: Spelling: 川上. Reading: かわかみ. Core meaning: upstream; upper reaches.
• Basic usage: Representative examples: 川上へ歩くと水の音が次第に大きくなった / 大雨の後、川上の橋を点検した.

2. Common pitfalls and similar expressions

• Upstream and downstream
  • 川上 is the direction from which a river flows, while 川下 is downstream. 川上へ marks movement upstream, and 川上の橋 is a bridge located in the upper reaches.