Glossary

Adventure - semi-random mini-quests that doesn't tie into the overall plot.
Class-specific quest - Quests offered to a specific class and no other class has access to them.
Quests - a set task to achieve a goal and be rewarded with experience, gold and/or items, not necessarily mandatory.
Scripted Event - randomly generated small, quest-like actions when the monsters or NPCs behave in an unusual fashion that's been programmed in advance.