A domain is a human-readable name assigned to an IP address to make accessing websites much easier. Domains are combined with a TLD (Top Level Domain) to produce what is known as a domain name. Domains themselves can be anything you choose and then choose a TLD to go with it. Common TLDs include:
- .com
- .net
- .org
- .info
- .si
Your domain, combined with a TLD, will procude the final domain name (yourdomain.com).
Domain names must be unique, and can only be registered to one person or organisation at a time.