The term fireproof safe is commonly used for a safe designed to protect its contents against fire. Strictly speaking, no safe is completely fireproof, which is why fire-resistant safe is the more accurate technical term.
Today, a distinction is generally made between a fire-resistant cabinet, intended primarily to protect documents or digital media against fire, and a fire-resistant safe, which also offers certified protection against burglary.
The actual level of protection depends on the fire-resistance standard, the tested protection time, the burglary-resistance grade and the type of contents, such as paper documents or digital media.