Bip39 Standard. The wallet handles the weighty lifting of changing the mnemonic words through a means of elaborate hashing, salting, and checksum operations right into a binary "seed," which happens to be then accustomed to make the all-significant personal and general public encryption keys. BIP32 and BIP44 are linked standards https://pageupdirectory.com/listings13138723/bip39-word-list-https-linktr-ee-bip39-not-known-facts-about-bip39-mnemonic-generator