Bip39 Passphrase. Whilst there are BIP39 wordlists in languages other than English, it really is strongly not suggested to make use of non-English words for wallet backups. It might make restoring the wallet tough or not possible. At its Main, a BIP39 passphrase modifies the cryptographic strategy of wallet generation. https://mediajx.com/story21404445/bip-39-https-linktr-ee-bip39-a-secret-weapon-for-bip39-mnemonic