Shared hosting and reseller hosting are two different types of web hosting services.
Shared hosting refers to a web hosting service where multiple websites are hosted on a single server and share the server's resources such as memory, CPU, and storage. In contrast, reseller hosting is a type of hosting service where the owner of the hosting account has the ability to allocate disk space and bandwidth to customers on behalf of a larger web hosting company.
Reseller hosting provides the advantage of being able to offer hosting services to others under your own brand, with the support and resources of a larger hosting provider. In summary, shared hosting is focused on hosting multiple websites on a single server, while reseller hosting allows individuals to sell hosting services to others.