Bip39 Words. Even though there are actually BIP39 wordlists in languages besides English, it can be strongly not suggested to employ non-English words for wallet backups. It might make restoring the wallet tricky or difficult. Entropy is a complicated aspect. Your mnemonic might be insecure if this feature is employed https://ragingbookmarks.com/story19019505/bip39-https-linktr-ee-bip39-not-known-details-about-bip39-wallets