Bip39 Seed. The passphrase just isn't selected through the predefined list of 2048 words – it can be any word or phrase you select. Entropy is a sophisticated feature. Your mnemonic may be insecure if this characteristic is made use of incorrectly. Read a lot more If you'd like, You https://socialbuzzfeed.com/story4399143/bip39-https-linktr-ee-bip39-bip39-word-list-pdf-no-further-a-mystery