What is Domain?
Domain : The term domain can refer either to a local subnetwork or to descriptors for sites on the Internet (e.g., www.indiana.edu). You can find the domain in an email address after an @ sign. The email address for the First Lady, for example, is firstname.lastname@example.org. You can see that "whitehouse.gov" is the domain.
The ending of a domain tells you what type it is:
.com = commercial
.gov = government
.org = organization
.edu = educational institution
What is Domain Name?
Domain Name : Domain names provide a system of easy-to-remember Internet addresses, which can be translated by the Domain Name System (DNS) into the numeric addresses (Internet Protocol (IP) numbers) used by a network. (CoffeeCup.com is a domain name as is Google.com)
What is Hosting?
Hosting : Hosting' is a service provided by a vendor which offers a physical location for the storage of web pages and files. Think of a Web Hosting Company as a type of landlord, they rent physical space on their servers allowing webpages to be viewed on the Internet