Domain and hosting Services
A domain is the name of a website, a URL is how to find a website, and a website is what people see and interact with when they get there. In other words, when you buy a domain, you have purchased the name for your site, but you still need to build the website itself.
Web hosting is an online service that allows you to publish your website files onto the internet. So, anyone who has access to the internet has access to your website. In practice, it usually refers to the service you get from a web hosting provider like one.com.