What are the differences between alcohol and drug addiction?

Addiction vs habit: Addiction - there is a psychological/physical component; the person is unable to control the aspects of the addiction without help because of the mental or physical conditions involved. Choice of addiction is due to habit. Habit - it is done by choice. The person with the habit can choose to stop, and will subsequently stop successfully if they want to. Addiction habit choice -is alcohol vs drug.

Substance used: Symptoms depend on the substance used/abused. There are similarities between alcohol and benzodiazepine abuse/addiction, but abuse of Cocaine (a stimulant) appears quite different. The similarity with all is continuing to use despite harmful effects in one's relationships, work, and other important parts of life. Heroin, meth, etc may expose to different life threats than alcohol. All r dangerous.

Drug Withdrawal: Addictions are more similar than they are different from a basic biological perspective (affecting the same pleasure-center in the brain), and in how they develop. However, one significant difference is that alcohol and benzodiazepines pose a greater risk during withdrawal (seizure, high blood pressure, possible death) and thus withdrawal from these substance should be monitored in a hospital.