BIP39 means Bitcoin Advancement Proposal 39. The words are picked from a particular list of 2048 widespread English words which can be accustomed to the make a binary seed (your personal essential). If you're unsure about a certain word's spelling, use the research perform (Ctrl+F on Windows/Command+File on Mac) within https://bookmarkmiracle.com/story20563232/the-2-minute-rule-for-bip39-all-words