血痕

1. Origins, structure, and basic meaning

• Structure: 血痕 is read as けっこん and means a bloodstain.
• Basic usage: It can be a clue in a mystery novel or a mark represented with red dye on a theatrical costume.

2. Common pitfalls and similar expressions

• A bloodstain serving as a clue
  • 血痕 is the small mark on the floor that becomes an important clue. Example: 推理小説では床の小さな血痕が重要な手掛かりになる。
• A bloodstain represented with dye
  • 血痕 is the stain on the costume represented with red dye rather than actual blood. Example: 劇の衣装についた血痕は赤い染料で表現されている。