Bip39. It’s a reminder of your important great importance of securely storing your seed phrase and your passphrase. If you insert a passphrase to the seed phrase, it completely changes the derived non-public keys and general public addresses in your wallet. In essence, it makes a brand new “hidden” wallet https://health-lists.com/story19717065/bip39-words-https-linktr-ee-bip39-about-ian-coleman-bip39