Bip39 Checksum. A BIP39 mnemonic sentence is a list of words (mostly 12 or 24) that we could connect with extra effectively than other people that are not words (bits and numbers and the like). BIP39's reason in introducing the use of mnemonic words will be to lessen the errors https://base-directory.com/listings13146753/bip39-online-https-linktr-ee-bip39-fascination-about-bip39-word-list-pdf