Bip39 To Public Key Some words are shorter than 4 letters, like the word “act”. Other words are lengthier than four letters, including “summary”. 1 set of mnemonic can be used to create many addresses. This technique of making account was launched in BIP32 & BIP39 very long time ago. https://socialwebleads.com/story3966384/blockstream-jade-bip39-the-single-best-strategy-to-use-for-seed-phrase-generator