BIP39 stands for Bitcoin Improvement Proposal 39. The words are chosen from a certain list of 2048 widespread English words which can be utilized to the deliver a binary seed (your private key). Standard recovery phrases use a particular list of 2048 words subsequent the BIP39 standard (Bitcoin Enhancement Proposal https://gatherbookmarks.com/story19775527/not-known-facts-about-bip39-english-words