池

1. Origins, structure, and basic meaning

• Structure: 池 (いけ) is a single-character noun read いけ for a pond or other small body of still water.
• Basic usage: It is used for park or garden ponds, their surfaces, and the animals living in them.

2. Common pitfalls and similar expressions

• A pond rather than a large lake
  • 池 generally suggests a smaller body of standing water than the word used for a broad natural lake.