Sanitary actually includes everything needed for a bathroom, toilet and even the taps in a kitchen fall under the sanitary. When I think of plumbing, the toilet comes up first, a good toilet seat and a toilet pump are some examples.
toilet seats; there are toilet seats without lids and toilet seats with lids. With the toilet seats with lids, there are those that close gently, the so-called soft close, and toilet seats that just really close.