One of the first skills that I learned as a retail sales associate was the difference between features and benefits. Understanding and applying this fundamental concept is a major component to successful selling.
For the uninitiated, features are the qualities of a product or service. For example, having anti-lock brakes in a car is a feature of that product.
Conversely, benefits are what the consumer gains by using the product or service. With anti-lock brakes, the benefit is increased safety.