礼状

1. Origins, structure, and basic meaning

• Structure: Written 礼状 and read れいじょう, it is a polite written letter expressing thanks for a gift, help, invitation, or similar kindness.
• Basic usage: It is written after receiving a present and may arrive formally from an event organizer.

2. Common pitfalls and similar expressions

• Written courtesy rather than spoken thanks
  • The gratitude is conveyed in a deliberate letter form.