One slight variation on that way of thinking about it - a server mediates access to a resource for its clients. A file server mediates access to a file system;

One slight variation on that way of thinking about it - a server mediates access to a resource for its clients. A file server mediates access to a file system; clients connect to access files. A database server mediates access to a collection of data; clients connect to access data. A print server mediates access to a printer; clients connect to access the printer. And an X server mediates access to the graphics device; clients connect to access the display and its related peripherals (keyboard, mouse).