You referring to 'income disparity.'

There are many causes of income disparity. Some believe that the rich stay rich and the poor have little opportunity to move up the ladder. However, choices and decisions, as well as educational opportunities, govern how we do in life.

Geographic disparity refers to differences or inequalities in access to resources, services, or opportunities based on a person's location. This can include disparities in healthcare, education, income, and other social and economic factors between different regions or communities. Geographic disparity highlights the uneven distribution of resources and challenges faced by individuals and communities in different geographical areas.

The plural of disparity is disparities.

The prefix of "disparity" is "dis-".