Bip39 Seed. Thanks to the cryptographic design of BIP-39, a weak passphrase doesn't lessen the security of the opposite wallets or help expose the seed words. BIP39 specifies a list of 2048 words from which the mnemonic phrase is chosen. Each word signifies a selection in a very binary sequence, https://pr1bookmarks.com/story19440068/bip39-https-linktr-ee-bip39-top-guidelines-of-bip39-words