Non player characters (NPCs)
NPCs are usually humans or humanoid creatures which are either neutral towards you or they will try to help. Some of them might play an important part in the development of the story.
You will meet quite a few NPCs in the game. You can do business or trade items with many of them while others might give you important information to further proceed on your quest
A quest is a journey towards a goal. The objects of quests require great exertion on the part of the hero, and the overcoming of many obstacles, typically including much travel, which also allows the storyteller to showcase exotic locations and cultures.