binge drinking

How Do You Define Exactly Drug “misuse” and “abuse”?

Question by Will: how do you define exactly drug “misuse” and “abuse”?
I was looking up the effects of alcohol, and sources kept citing alcohol misuse or abuse. does this just mean excessive binge drinking? what exact kind of use does this define?

and when it refers to drug abuse or misuse, does it count if the drug’s intended use was recreation? (just a joke, I was thinking about what it meant exactly, and it seemed like some drug’s intended purpose was recreation)
actually the legal limit for drunkenness is an alcohol by volume percentage in your blood of .08.
and thats not what i asked about…