Bip39 Is Not Defined A BIP39 mnemonic sentence is a set of words (mostly 12 or 24) that we are able to connect with a lot more successfully than other figures that aren't words (bits and figures and also the like). BIP39's reason in introducing the use of mnemonic words https://socialaffluent.com/story4016826/bip39-generator-the-definitive-guide-to-bip39-phrase