BIP39 means Bitcoin Advancement Proposal 39. The words are selected from a particular list of 2048 widespread English words which may be utilized to the generate a binary seed (your personal essential). BIP39 and 44, However, are a More moderen form of standardization of a specific list of words (passphrase) https://bookmarkingdelta.com/story18992432/facts-about-bip39-seed-phrase-word-list-revealed