Simply put, the domain name is the address you type into the address bar of a website browser to get to a website.
The domain name for Google, for instance, is https:/www.google.com
For this page, the domain name is https:/www.websitebuilderexpert.com
A domain name is (just like a fingerprint) exclusive to your website and cannot be shared between different websites.
Think of a domain name as your phone number and a website on your phone. They are separate objects, though they are related.
At any time, you can change your phone (website) and retain your current phone number (domain name) and simply link it to your new phone (new website).
Or you can switch your phone number (domain name) to another phone service provider (registrar of the domain name) and keep it connected to your current phone (your website).
The secret is that any particular website is not permanently trapped with your domain name. You can detach it from any other website you like and reconnect it to it. But bear in mind that only one single website at a time can be linked to the domain name.
You can get free domain names from different website builders that you use, such as Wordpress.com, Wix, Squarespace, Weebly, and so on.
"These website builders send you a" sub-domain "to be more precise. So, if we were to use our website name again as an example, something like a sub-domain would look like:
websitebuilderexpert.wordpress.com
websitebuilderexpert.wix.com
websitebuilderexpert.weebly.com
Especially if you want to create a long-term company with your own unique branding, a free sub-domain name is not always good.
For these two essential purposes, you might stop using free sub-domains:
That's why I always suggest investing a couple of pounds to get a proper domain that you totally own. It will also help your branding.