BIP39 stands for Bitcoin Improvement Proposal 39. The words are chosen from a certain list of 2048 common English words that may be used to the generate a binary seed (your personal important). When you are unsure about a specific word's spelling, use the lookup operate (Ctrl+F on Windows/Command+File on https://ez-bookmarking.com/story18923689/examine-this-report-on-bip39-passphrase