BIP39 means Bitcoin Improvement 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 personal key). This post explains BIP39, the standard that defines how seed phrases are created, and summarizes how BIP32 and https://peakbookmarks.com/story18986728/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator