Business generally refers to an activity producing revenue, sustenance, or subsistence. All sources of income for individuals and governments are in one way or another directly the result of business activity.
Business is a term with a multitude of economic meanings, varying distinctly in scope. As a broad field, "business" can be used to refer to a field of social science aimed at achieving particular economic goals, typically service, gain, or profit.
Business is often used as a term referring to personal responsibilities or concerns of a specific individual or collective entity.