BIP39 stands for Bitcoin Enhancement Proposal 39. The words are picked from a specific list of 2048 prevalent English words which can be accustomed to the generate a binary seed (your private essential). Standard recovery phrases use a specific list of 2048 words pursuing the BIP39 standard (Bitcoin Enhancement Proposal https://hubwebsites.com/story20158024/facts-about-bip39-seed-phrase-github-revealed