BIP39 stands for Bitcoin Improvement Proposal 39. The words are picked from a particular list of 2048 popular English words that may be accustomed to the deliver a binary seed (your non-public important). Standard recovery phrases use a particular list of 2048 words pursuing the BIP39 standard (Bitcoin Advancement Proposal https://express-page.com/story4530911/examine-this-report-on-bip39-passphrase