Economic inequality is an umbrella term for a) income inequality or distribution of income, b) wealth inequality or distribution of wealth, and c) consumption inequality. Each of these can be measured between two or more nations, within a single nation, or between and within sub-populations.
Tents of the homeless on the sidewalk in Skid Row, Los Angeles
An affluent house in Holmby Hills, Los Angeles, roughly 12 miles from downtown
A 1916 ad for a vocational school appealed to Americans' belief in the possibility of self-betterment, as well as threatening economic insecurity through lack of education and the consequences of downward mobility in the income inequality during the Industrial Revolution
The distribution of wealth is a comparison of the wealth of various members or groups in a society. It shows one aspect of economic inequality or economic heterogeneity.
Pyramid of global wealth distribution in 2013
Worlds regions by total wealth (in trillions USD), 2018