"Model" vs. "prototype": designing the blueprint of ideas

What is similar?

Both "model" and "prototype" are often used in the context of design, engineering, and manufacturing. They refer to representations or preliminary versions of a system or product that help visualize, evaluate, or test various aspects before final production or finalization.

What is different?

A "model" can refer to either a conceptual representation, often used for understanding or simulation, or a specific design/version of a product. It might not be functional or meant for actual use. A "prototype", on the other hand, is a functional version of a product used to test concepts, usability, or performance before full-scale production. It represents an early working version that is often closely examined and iteratively improved.

Which one is more common?