Prototype
It is a term used in a variety of contexts, including semantics, design, electronics, and software programming.
A prototype is generally used to evaluate a new design to enhance precision by system analysts and users.
Prototyping serves to provide specifications for a real, working system rather than a theoretical one.
In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the formalization and the evaluation of an idea.