Bip39. While there are BIP39 wordlists in languages other than English, it is strongly not encouraged to employ non-English words for wallet backups. It would make restoring the wallet difficult or unachievable. BIP39 is really a design implementation that lays out how copyright wallets generate the list of words (or https://bookmarksurl.com/story4263341/bip39-word-list-https-linktr-ee-bip39-getting-my-ian-coleman-bip39-to-work