BIP39 means Bitcoin Enhancement Proposal 39. The words are selected from a certain list of 2048 typical English words which can be accustomed to the deliver a binary seed (your non-public critical). In case you are unsure about a certain word's spelling, use the lookup functionality (Ctrl+F on Home windows/Command+F https://bookmarksfocus.com/story4365264/phrases-with-bit-an-overview