And what do the terms Alcohol Abuse and Alcohol Dependence mean?

• Alcohol Abuse (problem drinking, harmful drinking) - Individuals with alcohol abuse have patterns of alcohol drinking that lead to health, occupational, legal, or social problems. This can range from minor problems like waking up with a hangover to more serious consequences such as motor vehicle accidents and missing work.
• Alcohol Dependence (alcoholism) - Alcoholism is a disease. Alcoholics are physically addicted to alcohol and demonstrate withdrawal symptoms when they stop drinking. Alcoholics also develop tolerance, which means that they have to drink more alcohol to achieve the same level of intoxication. Alcoholics feel compelled to drink and continue to drink in the face of adverse consequences.