Website domains refers to the domain name that uniquely identifies your site on the Internet. Because the Internet is based on IP addresses, this domain/name should be hosted on a server who’s DNS (Domain Name System) has to be registered with the domain registrar. For example, if you have a .com extension, the DNS record will be registered at your hosting provider.
Each website domain has a suffix or abbreviation indicating the Top Level Domain (TLD) it belongs to. There is a limited number of such suffixes. Eg:
Since 2014, the term of Generic Top-Level Domains (gTLDs) appeared and these types of suffixes are starting to become the trend of future domains on the Internet. Eg: