Affordance Vs Usability



What is the difference between Affordance Vs Usability. Can someone explain me with examples please!


I’m not sure they’re really concepts that can be compared directly the way you seem to be implying.

Usability is, based on Nielsen’s definition, “is a quality attribute that assesses how easy user interfaces are to use”, or as I would put it, the quality of how well the thing accomplishes the user’s goals.

An affordance is what a design allows the operator to do. A button affords pushing, and sometimes it affords twisting, but it does not afford sliding. I think of affordances as the inverse of constraints, or the things that an design cannot do (which can be just as important).

A design that achieves good usability structures affordances (and constraints) in ways advantageous to the user’s goal.