棺

1. Origins, structure, and basic meaning

• Structure: The funeral noun 棺 (ひつぎ) denotes a coffin used to hold the body of a deceased person.
• Basic usage: A story may place a king's coffin underground, while mourners pray before a 花で飾られた棺.

2. Common pitfalls and similar expressions

• A coffin holding the deceased
  • It is a funerary object for the deceased, not an ordinary storage box, so its context and tone are solemn.