沢

1. Origins, structure, and basic meaning

• Structure: Written 沢 and read さわ, it is a relatively small natural stream running through a mountain valley.
• Basic usage: It is reached from a descending trail and heard while resting in nearby shade.

2. Common pitfalls and similar expressions

• Mountain stream rather than major river
  • The word evokes a small upland watercourse confined by the valley.