雷雨

1. Origins, structure, and basic meaning

• Structure: 雷雨(らいう) refers to rain accompanied by thunder and lightning.
• Basic usage: It appears in descriptions of sudden bad weather or conditions after a thunderstorm.

2. Common pitfalls and similar expressions

• Reading the compound
  • 雷 is read らい and 雨 is read う, together forming らいう.
• Rainfall and accompanying phenomena
  • 大雨 focuses on heavy rainfall, while 雷雨 highlights the presence of thunder and lightning.
  • 激しい雷雨 separately adds that the thunderstorm is intense.