The Interactive Glossary: Defining the Net
Yahoo!

Online directories, such as Yahoo!, are good at identifying general information. Like a card catalog in a library, they classify websites into categories, such as accounting firms, English universities and natural history museums. The results of your search will be a list of websites related to your search term. For instance, if you are looking for natural history museums, you might use a directory to find it.
In addition to being a directory of other websites, Yahoo! is also a search engine and provides services such as shopping, maps, webmail, games and financial information.
Learn more: Searching the Web