Definitions for "Affordance"
an aspect of an object which makes it obvious how the object is to be used
a property of an object, or a feature of the immediate environment, that indicates how that object or feature can be interfaced with
a property, or multiple properties, of an object that provides some indication of how to interact with that object or with a feature on that object
a design technique that allows people to intuit how to use an interface control by sight alone
Keywords:  tool, technology, allows
a use that a tool or technology allows
a possibility offered by the environment