Seed Phrase Words A BIP39 mnemonic sentence is actually a set of words (most often twelve or 24) that we are able to communicate with much more successfully than other figures that aren't words (bits and figures along with the like). BIP39's function in introducing the use of mnemonic words https://highkeysocial.com/story4058252/bip39-brute-force-the-2-minute-rule-for-bip39