A "모델 (Prototype)" is an early sample or version of a product that is used to test and validate ideas before full-scale production. It helps designers and engineers understand how a product will function and allows for adjustments based on feedback. Prototypes can be physical objects or digital representations, depending on the product being developed. In various fields, such as engineering, software development, and design, prototypes play a crucial role in the development process. They enable teams to explore concepts, identify potential issues, and improve the final product based on user interactions and testing results.