雨

1. Origins, structure, and basic meaning

• Structure: 雨 (あめ) is the noun for rain falling from the sky.
• Basic usage: 雨が降る makes rain the subject of falling, while 雨の音 uses の to identify the source of the sound.

2. Common pitfalls and similar expressions

• Rain and the sound it produces
  • 雨 denotes rain as a weather phenomenon. In a phrase such as 雨の音, it also provides the source of the audible rain sound.