The best to words to describe a strong, fireproof, complex locking cabinet used for storing valuables.
  1. Safe
    Obviously the number one word for safe.
  2. Lockbox
    A locking box better known as a safe.
  3. Vault
    A chamber used for storage, otherwise known as a safe.
  4. Strongbox
    A box that is strong and durable, aka a safe.
  5. Coffer
    This is obviously the worst one, it autocorrects to coffee every time, and almost no one even knows it exists, would not recommend using this word.