Bip39 Passphrase. A BIP39 mnemonic sentence is often a list of words (most often 12 or 24) that we can easily communicate with a lot more efficiently than other people that are not words (bits and numbers as well as like). BIP39's reason in introducing the usage of mnemonic words https://sparedirectory.com/listings577234/bip39-word-list-numbers-https-linktr-ee-bip39-bip39-word-list-pdf-options