Bip39 Seed Phrase. The passphrase is just not picked with the predefined list of 2048 words – it might be any word or phrase you end up picking. convey to your wallet how to find your coins guiding it throughout the tree and are described in Bitcoin Enhancement Proposals (BIP). https://bookmarkloves.com/story21721000/bip39-https-linktr-ee-bip39-bip39-words-an-overview