BIP39 stands for Bitcoin Improvement Proposal 39. The words are chosen from a specific list of 2048 common English words that may be used to the crank out a binary seed (your non-public crucial). Standard recovery phrases use a specific list of 2048 words pursuing the BIP39 standard (Bitcoin Improvement https://bookmarksparkle.com/story18930075/5-essential-elements-for-bip39-explained