海藻

1. Origins, structure, and basic meaning

• Structure: 海藻 is read as かいそう and means “seaweed”.
• Basic usage: The examples show seaweed on rocks and dried seaweed rehydrated for cooking.

2. Common pitfalls and similar expressions

• Distinguishing senses and uses
  • It is the collective term for marine algae, including edible kinds, and differs biologically and by habitat from terrestrial 草.