BIP39 stands for Bitcoin Improvement Proposal 39. The words are selected from a specific list of 2048 typical English words which may be utilized to the create a binary seed (your personal important). Standard recovery phrases use a selected list of 2048 words next the BIP39 standard (Bitcoin Advancement Proposal https://exactlybookmarks.com/story18981095/not-known-factual-statements-about-bip39-explained