Bip39 Mnemonic Words Some words are shorter than 4 letters, including the word “act”. Other words are longer than 4 letters, for example “summary”. Just one set of mnemonic can be utilized to make numerous addresses. This method of making account was introduced in BIP32 & BIP39 long time ago. https://bookmarkssocial.com/story18940470/bip39-passphrase-generator-the-smart-trick-of-bip39-phrase-that-no-one-is-discussing