a republic is a subset of the broad category of government known as a “democracy.” This leads to our other definition.

Referencing Abraham Lincoln's definition of democracy as "government of the people, by the people, for the people," he said the system should work for all citizens rather than a privileged few.

Constitutional Democracy – A constitutional democracy is a government under law in which ... in order to illuminate it in ways that no definition can, and thereby allow it to evolve further ...