Income
Flow of money into a household at a given point in time
Wealth
Value of assets within a household at a given point in time
Benefits of inequality
Creates incentive to work
Encourages investment into businesses and work force
Costs of inequality
Inequality undermines price mechanism, ignores those with no income put ppl of buying
Underconsumption of merit goods over consumption of demerit goods
Lower quality of life
Inc crime