藻

1. Origins, structure, and basic meaning

• Structure: 藻 (も) is a single-character noun read も for algae growing in water.
• Basic usage: It refers to green growth on a pond bottom or attached to wet rocks.

2. Common pitfalls and similar expressions

• Aquatic algae rather than any greenery
  • 藻 specifically points to algae in an aquatic setting and does not cover every grass, moss, or green plant.