is a vault used to store expensive things

Yes, a vault is typically used for storing valuables and important items that require high security. Here are some common uses:

1. Banks: Vaults in banks are used to store cash, important documents, and valuable items belonging to customers.

2. Museums: Artwork, artifacts, and other precious items are often stored in museum vaults for protection and preservation.

3. Jewelers: Vaults are used to store jewelry, diamonds, and other expensive items in jeweler's stores.

4. Government Offices: Important documents, records, or historical artifacts may be stored in secure government vaults.

5. Personal Safe Rooms: Some homes or businesses have private vaults for storing personal valuables or important documents.

6. Mines: Vaults can be used for storing precious metals or gemstones before they are moved or sold.

7. Military: High-security vaults are sometimes used by the military to store weapons, sensitive information, or classified materials.

The primary purpose of a vault is to provide a safe, secure place for storing items of high value or importance, protected from theft, damage, or other risks.