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 Anatomy of a Domain Name

A domain is typically broken into parts separated by dots: 

• Top-Level Domain (TLD): The extension at the end, such as .com, .org, or country-specific ones like .uk...
• Second-Level Domain (2LD): The unique name you choose for your brand or site (e.g., the "google" in google.com).
• Subdomain: An optional prefix used to organise different sections of a site, such as blog.example.com. 

Getting a Domain

You do not strictly "buy" a domain forever; you lease it for a set period (usually 1 to 10 years) through a service called a domain registrar like GoDaddy, Namecheap, or Google Domains. To keep the domain, you must pay a renewal fee before it expires.