What is the term for a non-functioning demonstration of an application?

The term "Mock-up" refers specifically to a non-functioning demonstration of an application. It is typically a visual representation that showcases the design and user interface of an application without implementing any of the underlying functional capabilities. This allows stakeholders to understand how the application will look and feel, enabling discussions about design and layout without getting into the complexities of how the application works.

In contrast, a prototype often incorporates some level of functionality, allowing users to interact with the application in a limited way. A blueprint usually refers to detailed planning documents or designs that guide the development process, and a model can represent various concepts including theoretical descriptions or mathematical representations but is not specifically tied to user interfaces in the same way as a mock-up.