BIP39 stands for Bitcoin Advancement Proposal 39. The words are selected from a selected list of 2048 frequent English words that may be accustomed to the crank out a binary seed (your personal crucial). Standard recovery phrases use a selected list of 2048 words following the BIP39 standard (Bitcoin Advancement https://writeablog.net/ipennywpzc/h1-b-opening-the-power-of-bip39-exactly-how-to-produce-and-use-mnemonic