Bip39 Ian Coleman. The passphrase is not selected from your predefined list of 2048 words – it can be any word or phrase you end up picking. BIP44 defines a certain key derivation path framework which allows for handling a number of accounts and coin styles inside a one wallet, https://pageoftoday.com/story4178472/bip39-passphrase-https-linktr-ee-bip39-how-much-you-need-to-expect-you-ll-pay-for-a-good-ian-coleman-bip39