BIP39 means Bitcoin Enhancement Proposal 39. The words are chosen from a specific list of 2048 prevalent English words which can be used to the produce a binary seed (your non-public important). Standard recovery phrases use a selected list of 2048 words next the BIP39 standard (Bitcoin Advancement Proposal 39). https://bookmarkedblog.com/story19576828/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator