What is the difference between a parked domain and a subdomain?

Question

What is the difference between a parked domain and a subdomain?

Answer

A parked domain (or alias) is a secondary domain that points to the user’s primary domain. If users visit the parked domain’s website, the primary website appears.

 A subdomain is a subsection of your website that sometimes exists as a subdirectory of your public_html (document root) directory or your account’s home directory. Subdomains use a prefix in conjunction with the domain name.

For example, if the registered domain name is example.com, the subdomain is prefix.example.com.

cPanel's official documentation on parking and parked domains:

Park a Domain

cPanel's official documentation on subdomains:

Subdomains