Bip39 Checksum. A BIP39 mnemonic sentence can be a set of words (most often twelve or 24) that we could communicate with much more successfully than other characters that are not words (bits and numbers plus the like). BIP39's goal in introducing using mnemonic words is to decrease the faults https://iodirectory.com/listings13064551/bip39-words-https-linktr-ee-bip39-rumored-buzz-on-bip39-standard