Translation guide
Describes materials, objects, or structures that are resistant to fire or made to not burn easily. In Japanese, this is often expressed with compound adjectives, nouns, or verbs.
Describing something as resistant to fire or not easily burned, often for materials or products.
The most common and general adjective meaning 'fireproof' or 'fire-resistant'. Used for materials, safes, building components, etc.
This safe is fireproof.
We use fireproof curtains.
Means 'non-combustible' or 'incombustible'. Often used in technical or building contexts.
Please use fireproof building materials.
Literally 'fire prevention'. Used for structures, doors, or measures designed to prevent fire spread.
The fireproof door closed.
Expressing the action of treating something to become fireproof.
Referring specifically to a fireproof safe or box for valuables.
Standard term for a fireproof safe.
Important documents are kept in a fireproof safe.
耐火性 (taikasei) is the most general term for fire resistance. 不燃性 (funensei) emphasizes that something does not burn at all (non-combustible). 防火 (bōka) relates to fire prevention measures, often for buildings or systems.