Official bip39 list https://www.4shared.com/s/fAf7kF4dLku As it is possible to see, these are generally common words that happen to be easy to store or try to remember. It's not suggested to remember them, however it is noticeably less difficult than remembering a 64-character-lengthy string of random quantities and letters. BIP32 and https://linktr.ee/bip39