Bip39 Mnemonic. The passphrase is not really selected from the predefined list of 2048 words – it may be any word or phrase you select. It is also discouraged to deliver words directly from assumed and make use of a safe cryptographic function to take action. BIP-32 hierarchical deterministic wallet. https://rotatesites.com/story20036601/bip39-mnemonic-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-wallets