Bip39 Tool. The passphrase isn't picked from the predefined list of 2048 words – it could be any word or phrase you end up picking. Entropy is a sophisticated feature. Your mnemonic could be insecure if this characteristic is utilized incorrectly. Read a lot more BIP-32 hierarchical deterministic wallet. BIP-39 https://thebookmarkplaza.com/story19529847/bip39-word-list-pdf-https-linktr-ee-bip39-not-known-details-about-bip39-list