Deconstruction is the ability to break something down into smaller parts. The extent of this ability can vary from user to user. Some can only break down physical things like matter while others can interact with metaphysical objects like the soul. It differs from traditional Matter Manipulation or other abilities like them by only allowing the user to break things down, not manipulate them. Deconstruction users cannot manipulate things they've already broken down to the fullest extent of their ability.
Note that natural side effects from powers, such as Energy Manipulation, Fire Manipulation, Vibration Manipulation, and other abilities that can produce enough energy output to destroy or dismantle objects, do not mean that characters automatically qualify for this ability, unless the abilities in question specifically and directly focus on deconstruction in itself, rather than as a consequence.