Directory Can look similar to a search engine but is different because sites must be submitted to a directory, and are usually checked for eligibility. A search engine tries to index as many sites as possible by following links from site to site. Directories are usually split up into various categories. Most directories are smaller and will concentrate on a specific area of interest. There are many different types of domains.
Most countries have their own domain suffix.
The rules for purchasing domain names vary for each type. A .ie however is much more difficult to obtain because you have to prove that you are entitled to it. More info here . Download Term used to describe the transfer of data from a server to a web browser.