Bip39 Seed Phrase. While you can find BIP39 wordlists in languages aside from English, it is actually strongly not suggested to employ non-English words for wallet backups. It might make restoring the wallet hard or unachievable. BIP39 specifies a list of 2048 words from which the mnemonic phrase is preferred. https://bookmarkgenious.com/story19757347/bip39-list-https-linktr-ee-bip39-a-simple-key-for-bip39-unveiled