What is the difference between a chart and a diagram?

A graph is a diagram of a mathematical function, but can also be used (loosely) about a diagram of statistical data. A chart is a graphic representation of data, where a line chart is one form.

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.

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