Bip39 Standard. On top of that, BIP39 defines the passphrase alternative, that provides a moderate quantity of additive protection in case your seed phrase is stolen or otherwise accidentally exposed. However, Additionally, it adds some threat, so it is suggested For additional expert end users. BIP32 and BIP44 are related https://theidirectory.com/listings13114559/bip39-seed-https-linktr-ee-bip39-bip39-list-options