Words are easier.
When your phone number spells a word or phrase that expresses something about yourself or your business, you have a telephone number nobody could forget. Such mnemonic phrases are sometimes called vanity numbers, but we'll call them fonewords. Foneword, written in Visual Basic 3, relied on VB3's database support for dictionary handling and used VB3's original setup kit for installation. A full installation of Foneword took up more than a megabyte, and the setup program sometimes failed when another VB program was running. What's more, searching the dictionary database was slow.