BIP39 means Bitcoin Enhancement Proposal 39. The words are chosen from a certain list of 2048 widespread English words which can be accustomed to the produce a binary seed (your non-public crucial). BIP39 and 44, Alternatively, undoubtedly are a More moderen kind of standardization of a particular list of words https://tornadosocial.com/story4317828/bip39-seed-phrase-mnemonics-generator-an-overview