Relate business with economics

How you can relate business with economics?

Economics is how people choose resources to satisfy their unlimited wants and
Business is legal activity, done to earn profit. we can say economic is not same
as business however it relates with business in many ways, e.g.

Price elasticity of demand use to set price items.
Factors that change demand like customers taste
Fixed cost and variable cost use for decision making considering the affect of
product to customers.