Bip39 Last Word Checksum A BIP39 mnemonic sentence is actually a set of words (mostly twelve or 24) that we can easily communicate with much more successfully than other characters that are not words (bits and quantities as well as like). BIP39's goal in introducing the usage of mnemonic words https://top100bookmark.com/story18700124/bip39-phrase-5-easy-facts-about-seed-phrase-generator-described