My Dad was a alcoholic, Alcoholism, also known as alcohol use disorder (AUD), is a broad term all alcohol related disorders
That is not fun. I do not drink at all.
alcohol abuse and alcohol dependence. were the two ways they used to  classify it
I had a uncle who had alcohol dependence.
a person drinks large amounts over a long time period, has difficulty cutting down, acquiring and drinking alcohol takes up a great deal of time are both ways you can identify a alcoholic 
That sounds like my uncle.
Did he ever do anything risky like drink and drive?
No, thank god. That would be very bad.
One thing that scares me is Drinking during pregnancy because it  can cause damage to the baby