What is Cold storage?

Keeping keys offline on a device that never connects to the internet.

A hardware wallet signs transactions offline, so a compromised computer cannot drain the funds by itself. The key never leaves the device.

Cold storage protects against remote theft, not against losing the seed phrase or signing a malicious transaction yourself.

Hardware walletSecurity
A dedicated device that holds keys and signs transactions after you confirm on it.
Private keySecurity
The secret that proves ownership of a wallet; anyone holding it controls the funds.
WalletWallets
Software or hardware that holds keys and signs transactions; it does not hold coins.

See it on a coin page