Bip39 Passphrase. Entropy values should be sourced from a strong source of randomness. What this means is flipping a good coin, rolling a fair dice, noise measurements etc. Will not use phrases from textbooks, lyrics from tracks, your birthday or steet tackle, keyboard mashing, or anything you believe is random, https://directoryglobals.com/listings13034313/bip39-word-list-pdf-https-linktr-ee-bip39-bip39-options