BIP39 stands for Bitcoin Enhancement Proposal 39. The words are selected from a certain list of 2048 common English words which may be used to the make a binary seed (your private critical). This informative article explains BIP39, the standard that defines how seed phrases are created, and summarizes how https://listbell.com/story8520172/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-seed-phrase-mnemonics-generator