A domain name is your website name and the address (Website URL) that you type into a website browser address bar, to get to a website. There are plenty of resources out there telling you in technical terms, what a domain name is.
To visit this website, for example, you’ll go to the URL www.mywebsite.com. We all use URLs to visit webpages and other resources on the web. A domain name is the address where Internet users can access your website. Therefore a domain name is used for finding and identifying computers on the Internet.
Computers use IP addresses, which are a series of number. However, it is difficult for humans to remember strings of numbers. Because of this, domain names were developed and used to identify entities on the Internet rather than using IP addresses.
A domain name can be any combination of letters and numbers, and it can be used in combination of the various domain name extensions, such as .com, .net and more. The key is that your domain name is not permanently stuck with any specific website. You can disconnect it and reconnect it to any other website you want. But keep in mind that the domain name can only be connected to 1 single website at a time.
The domain name must be registered before you can use it. Every domain name is unique. No two websites can have the same domain name. If someone types in www.mywebsite.com, it will go to your website and no one else’s.