Bip39 Vs Slip39. Although you can find BIP39 wordlists in languages other than English, it can be strongly not advisable to implement non-English words for wallet backups. It'd make restoring the wallet complicated or unattainable. Entropy is a complicated characteristic. Your mnemonic can be insecure if this feature is utilized https://socialbuzzmaster.com/story4395366/bip39-word-list-pdf-https-linktr-ee-bip39-bip-39-no-further-a-mystery