Bip39 Word List Binary Some words are shorter than four letters, such as the word “act”. Other words are more time than four letters, for example “summary”. One particular list of mnemonic can be utilized to build many addresses. This process of producing account was introduced in BIP32 & BIP39 https://brightbookmarks.com/story18893604/bip39-words-seed-phrase-generator-no-further-a-mystery