Answer: concrete , abstract
Explanation: Prototype explains that a new stimulus is compared to a single prototype in a category, and while exemplar theory suggests that a new stimulus is compared to multiple known exemplars in a category.
According to the Varying Abstraction Model (VAM), prototypes and exemplars are simply two extremes on a continuum of abstraction with exemplars nearer the concrete end of the spectrum and prototypes nearer the abstract end of the spectrum.