Strictly speaking, the term "server" refers to a computer program or process (running program). Through metonymy, it refers to a device used for (or a device dedicated to) running one or several server programs. On a network, such a device is called a "host". In addition to "server", the words "serve" and "service" (as verb and as noun respectively) are frequently used, though "servicer" and "servant" are not. The word "service" (noun) may refer to either the abstract form of functionality, e.g. Web service. Alternatively, it may refer to a computer program that turns a computer into a server, e.g. Windows service. Originally used as "servers serve users" (and "users use servers"), in the sense of "obey", today one often says that "servers serve data", in the same sense as "give". For instance, web servers "serve web pages to users" or "service their requests".