Bip39 Mnemonic. The passphrase is not picked from the predefined list of 2048 words – it can be any word or phrase you decide on. Entropy is an advanced feature. Your mnemonic may be insecure if this attribute is applied improperly. Read through far more Your seed phrase by itself https://health-lists.com/story20309114/bip39-https-linktr-ee-bip39-5-easy-facts-about-bip39-generator-described