BIP39 means Bitcoin Improvement Proposal 39. The words are selected from a certain list of 2048 common English words which may be used to the create a binary seed (your private important). When you are Uncertain about a certain word's spelling, utilize the search operate (Ctrl+File on Windows/Command+F on Mac) https://cruxbookmarks.com/story18877322/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39