A model is a representation of a real item or concept.
Toys serve as models assisting with the understanding of complex ideas.
Different models can be used to represent the same thing. The kind of model and its complicity depends on its purpose. Various models may be constructed to represent a given item or concept. 2.1c Models are often used to study processes that happen too slowly, too quickly, or on too small or too large a scale to observe directly. Models can be used to demonstrate time progression or visual enhancements.