Bip39 Vs Slip39. While you can find BIP39 wordlists in languages besides English, it really is strongly not encouraged to work with non-English words for wallet backups. It'd make restoring the wallet tough or not possible. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked. https://socialaffluent.com/story4640689/bip39-word-list-pdf-https-linktr-ee-bip39-bip39-wallet-can-be-fun-for-anyone