Resources (or "resource nodes") are a part of the game world that a player character can loot by gathering or harvesting for raw ingredient items usable by professions or items required by quests.

Examples of resources:

Resource currencies

World of Warcraft: Warlords of Draenor Warlords of Draenor introduced a type of currency called Garrison Resources and World of Warcraft: Legion Legion added Order Resources. These are basically currency called "resources".

Resource mechanics

Main article: Resource mechanics

Each class has a Resource mechanics (also called "resource system") which is used to power its abilities; for example, many casters use mana and rogues use Energy. See Resource mechanics category.