+An **economic sector** categorizes businesses and activities by their core function, defining the structured layers within an [Economy](/wiki/economy). These divisions, such as the [Primary Sector](/wiki/primary_sector) extracting raw materials and the [Secondary Sector](/wiki/secondary_sector) transforming them, illustrate the flow of production and value creation.
+## See also
+- [Industry](/wiki/industry)
+- [Goods](/wiki/goods)
+- [Services](/wiki/services)