What Is Z Seeded Some words are shorter than 4 letters, including the word “act”. Other words are for a longer period than four letters, such as “summary”. Just one list of mnemonic may be used to build multiple addresses. This process of building account was released in BIP32 & https://todaybookmarks.com/story18668773/bip39-english-words-not-known-factual-statements-about-bip39-word-list