Bip39 Seed Phrase. Though there are actually BIP39 wordlists in languages other than English, it can be strongly not suggested to utilize 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://single-bookmark.com/story19068541/bip39-words-https-linktr-ee-bip39-a-review-of-bip39-word-list-pdf