Bip39 Last Word Checksum A BIP39 mnemonic sentence is actually a set of words (mostly twelve or 24) that we are able to connect with far more effectively than other people that aren't words (bits and figures and also the like). BIP39's reason in introducing the use of mnemonic words https://bookmarks-hit.com/story19154147/bip39-all-words-the-definitive-guide-to-bip39-phrase