A Monero account, or wallet, stores the information necessary to send and receive Moneroj.In addition to sending and receiving, the Monero Wallet software keeps a private history of your transactions and allows you to cryptographically sign messages.It also includes Monero mining software and an address book.
A cold wallet is generated on a trusted device or computer via an @airgap.If the device is to be reused, the data storage should be securely overwritten.As soon as a cold wallet is connected to the Internet or its mnemonic phrase or @spend-key is entered on an Internet-connected device, it's no longer "cold" and should be considered "hot".