Bip39 Words. The passphrase is just not picked from the predefined list of 2048 words – it might be any word or phrase you choose. BIP39 specifies a list of 2048 words from which the mnemonic phrase is preferred. Just about every word signifies a quantity in the binary sequence, https://health-lists.com/story19837644/bip39-list-https-linktr-ee-bip39-bip39-words-secrets