BIP39 stands for Bitcoin Improvement Proposal 39. The words are chosen from a selected list of 2048 popular English words which can be utilized to the crank out a binary seed (your non-public vital). BIP39 and 44, Conversely, can be a more recent form of standardization of a particular list https://thebookmarkfree.com/story19115003/the-greatest-guide-to-seed-phrase-bip39