BIP39 stands for Bitcoin Improvement Proposal 39. The words are selected from a certain list of 2048 typical English words which may be used to the make a binary seed (your non-public crucial). Standard recovery phrases use a certain list of 2048 words pursuing the BIP39 standard (Bitcoin Advancement Proposal https://throbsocial.com/story20725291/top-latest-five-bip39-words-urban-news