They are different Operating Systems so the philosophy and command structures are different but the day-to-day tasks are pretty much the same in either environment.
In the simplest of terms they are the same, it is just the target supported is different. Network administration supports the hardware and software that makes up the network, switches and routers for...
The term "full administration" implies that the person holding it has either the Power of Attorney over an individual -or- the Executor of the estate of a deceased. A "release of administration"...