BIP39 stands for Bitcoin Enhancement Proposal 39. The words are picked from a particular list of 2048 typical English words which can be used to the make a binary seed (your private important). Standard recovery phrases use a particular list of 2048 words subsequent the BIP39 standard (Bitcoin Advancement Proposal https://hotbookmarkings.com/story18821985/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39