A domain name is a unique string of characters used to identify a website. It is composed of two parts: the top-level domain (TLD) and the second-level domain (SLD). The TLD is the suffix at the end of the domain name, such as .com, .org, or .net. The SLD is the part of the domain name that comes before the TLD, such as google in google.com.
The owner of a domain name is the person or organization that has registered the domain name with a domain registrar. The domain registrar is a company that manages the registration of domain names and provides services such as domain name registration, renewal, and transfer.