Bip39 Standard. The passphrase is not picked through the predefined list of 2048 words – it could be any word or phrase you decide on. BIP39 specifies a list of 2048 words from which the mnemonic phrase is chosen. Each and every word signifies a range inside a binary sequence, https://thesocialdelight.com/story5029151/bip39-word-list-https-linktr-ee-bip39-how-bip39-generator-can-save-you-time-stress-and-money