BIP39 means Bitcoin Improvement Proposal 39. The words are selected from a specific list of 2048 widespread English words that may be accustomed to the generate a binary seed (your non-public essential). In case you are Doubtful about a specific word's spelling, utilize the lookup functionality (Ctrl+F on Windows/Command+F on https://socialbuzzmaster.com/story4538424/invalid-bip39-phrase-things-to-know-before-you-buy