Industry comes from the Latin industria, which means "diligence, hard work,". A group of productive enterprises or organizations that produce or supply goods, services, or sources of income are included here,
EX: agriculture, energy, government, and manufacturing.
Functional - used to contribute to the development or maintenance of a larger whole. Communities and groups based on standard organizational functions are included here, including
EX: finance, operations, supply chain, human resources, and information technology.
Special Interest - a shared interest in advancing a specific area of knowledge, learning or technology where members cooperate to affect or produce solutions, and to contribute to the development or maintenance of a larger whole