湖底

1. Origins, structure, and basic meaning

• Structure: Spelling: 湖底. Reading: こてい. Core meaning: lakebed; bottom of a lake.
• Basic usage: Representative examples: 調査船から湖底の地形を詳しく観測した / 水が澄んでいるので、岸からでも湖底の石が見える.

2. Common pitfalls and similar expressions

• The bottom of a lake
  • 湖底 is the terrain at the bottom beneath a lake's water. Distinguish it from 湖岸, the lakeshore, and 湖面, the water surface.