A non-generic domain is a restricted generic domain that does not impose rules for users who want a subdomain in this area. A user can use a subdomain for an activity that does not conform to the type of activities
what is a top-level domain
Top Level Domain | Part 1
Top Level Domain | Part 1
In the system of domain names, top level domain (in English top-level domain, TLD Short) is an area that is at the top of the hierarchy of domains.