BIP39 means Bitcoin Enhancement Proposal 39. The words are selected from a selected list of 2048 frequent English words which may be utilized to the deliver a binary seed (your non-public crucial). BIP39 and forty four, Then again, really are a more recent form of standardization of a selected list https://infopagex.com/story4378993/the-definitive-guide-to-bip39-seed-phrase