棺・柩|かんkan[1]atamadaka (head-high)

1. nouncoffin; casket

• Synonym棺桶かんおけNeutralNeutral everyday word for a coffin holding the body; also seen in colloquial sayings like 「棺桶に片足を突っ込む」. 「棺」 sounds more formal and solemn.
• Related霊柩れいきゅうWrittenWritten/formal prose for a coffin containing the body; mostly appears in compounds such as 「霊柩車」 and is rarely used on its own.

「棺」 is the default word for a coffin. Use 「棺桶」 in everyday or colloquial speech, as in 「棺桶に片足を突っ込む」; 「霊柩」 is written style and mostly appears in compounds such as 「霊柩車」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （カン・ひつぎ）死体したいを葬儀そうぎにあたって納おさめる容れ物いれもの。棺桶かんおけ。