Answer:
The definition of punishment in ordinary usage contrast with the definition of punishment in behavior modification all depends on what would be defined as the consequence for a specific child.
Behaviour modification definition :
When we define punishment according to whether the behavior decreases in the future as a result of the consequences, we are adopting a functional definition. Because you are seeing what kind of consequence causes the decrease of behavior.
Ordinary usage definition :
If a behavior decreases in the future. It all depends on what would be defined as the consequence for a specific child.