Bip39 Words. Though there are BIP39 wordlists in languages other than English, it truly is strongly not advisable to work with non-English words for wallet backups. It would make restoring the wallet hard or extremely hard. BIP39 specifies a list of 2048 words from which the mnemonic phrase is chosen. https://bookmarklethq.com/story19344986/bip39-mnemonic-https-linktr-ee-bip39-top-guidelines-of-bip39-words