洗剤

1. Origins, structure, and basic meaning

• Structure: 洗剤 (せんざい) is a noun for detergent used to clean dishes, clothing, or other items.
• Basic usage: 洗剤で洗う marks detergent as the cleaning means; 衣類に合った洗剤を選ぶ makes a suitable product the choice.

2. Common pitfalls and similar expressions

• Detergent suited to the item cleaned
  • 洗剤 is a cleaning agent whose formulation and use vary for clothing, dishes, floors, and other targets. Product choice depends on compatibility with the material being cleaned.