A more thorough explanation:

The Takings Clause is a provision in the Fifth Amendment of the United States Constitution that prohibits the government from taking private property for public use without fairly compensating the owner. This is also known as the Just Compensation Clause.

Eminent domain is the power of the government to take privately owned property, especially land, and convert it to public use, subject to reasonable compensation for the taking. This power is an incident of federal sovereignty and an "offspring of political necessity."

For example, if the government needs to build a new highway and the only way to do so is to take a piece of private property, they must compensate the owner fairly for the land. Another example is if the government needs to build a new school and the only available land is privately owned, they must compensate the owner for the land before taking it.

The Takings Clause is important because it protects the property rights of individuals and ensures that the government cannot take property without providing just compensation. This helps to prevent abuse of power by the government and promotes fairness in the legal system.