Translation guide
A strongbox is a sturdy, lockable container for valuables. In Japanese, the most common equivalent is 金庫, but the best choice depends on size, material, and context.
A secure, lockable metal box or small safe for storing money, documents, or valuables.
A heavy, old-fashioned chest or coffer, often wooden with metal bands, used historically for valuables.
A small, often portable box with a lock, used for cash or small items.
Literally 'money box'; a cash box or lockbox, often used in shops or for personal savings.
金庫 is the general term for any safe or strongbox, from small home safes to bank vaults. 金箱 is specifically a cash box, often simpler and smaller. 手提げ金庫 is a portable safe with a handle, commonly used by businesses.
If you mean a modern fireproof safe, use 耐火金庫 (たいかきんこ). For a wall safe, use 壁埋め込み金庫 (かべうめこみきんこ). For a hotel room safe, セーフティボックス is common.
I keep important documents in the safe.
この金庫は耐火性です。
This safe is fire-resistant.
A portable strongbox with a handle, often used by businesses for cash transport.
売上金を手提げ金庫に入れて銀行へ持っていく。
I put the day's earnings in the portable safe and take it to the bank.
A small safe or strongbox, emphasizing compact size.
小型金庫をクローゼットに隠している。
I hide a small safe in the closet.
A traditional Japanese wooden chest with metal fittings, used for storing clothing and valuables; now mostly historical or decorative.
祖母の家に古い長持がある。
There is an old wooden chest at my grandmother's house.
A wicker or bamboo trunk, sometimes used as a strongbox for travel or storage in the past.
行李に衣類を詰めて運んだ。
They packed clothes into a wicker trunk and carried it.
I take out coins from the shop's cash box.
A generic lockable box, often used for modern small strongboxes or lockboxes.
鍵付きボックスにパスポートを入れている。
I keep my passport in a lockbox.