Bip39 Checksum. Though there are BIP39 wordlists in languages apart from English, it's strongly not suggested to utilize non-English words for wallet backups. It would make restoring the wallet challenging or unattainable. Entropy is a sophisticated feature. Your mnemonic could be insecure if this aspect is utilized improperly. Read a https://mnobookmarks.com/story19444241/ian-coleman-bip39-https-linktr-ee-bip39-the-single-best-strategy-to-use-for-bip39-wallets