Mock-up Design
Why do graphic designers use mockups to display their work?
Mock-up Design Notes
A mock-up is a full-size model of a design or device, used for product presentations or other purposes.
Think of it as a means of showing off what your design will actually look like when it's put out into the real world.
Graphic Designers use mock-ups all the time to show their clients how a design will look “in real life”.