blood

1. Origins, structure, and basic meaning

• Structure: 血 is read ち, has 6 strokes, and relates to blood.
• Basic usage: 血 is read ち, and 血圧 is read けつあつ.

2. Common pitfalls and similar expressions

• 血 and 血圧
  • 血 means blood.
  • 指を切って血が出たので、すぐに傷口を洗った。 means “I cut my finger and it started bleeding, so I immediately washed the wound.”
  • 血圧 means blood pressure.
  • 診察の前に、待合室で血圧を測った。 means “I had my blood pressure measured in the waiting room before the examination.”