Bip39 Seed Phrase. Although you will discover BIP39 wordlists in languages aside from English, it is strongly not advisable to employ non-English words for wallet backups. It would make restoring the wallet tricky or not possible. BIP39 specifies a list of 2048 words from which the mnemonic phrase is decided https://easiestbookmarks.com/story18936504/bip39-mnemonic-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained