Bip39. Thanks to the cryptographic style and design of BIP-39, a weak passphrase doesn't lessen the protection of the opposite wallets or help expose the seed words. If you had been to reveal your seed phrase beneath duress, your concealed wallets would stay secure and unidentified. Storing entropy (for example https://dirstop.com/story23664596/bip39-list-https-linktr-ee-bip39-bip39-words-an-overview