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Politics is a process by which groups of people make decisions. The term is generally applied to behaviour within civil governments, but politics has been observed in all human group interactions, including corporate, academic, and religious institutions. It consists of "social relations involving authority or power" and refers to the regulation of a political unit, and to the mmethods and tactics used to formulate and apply policy. However, there is not an academic consensus on the precise definition of "politics" and what is consider as political and what is not. Max Weber defined politics as the struggle for power.

"Politics" ultimately comes from the Greek word "polis" meaning state or city. "Politikos" describes anything concerning the state or city affairs. In Latin, this was "politicus" and in French "politique". Thus it became "politics" in Middle English ( see the Concise Oxford Dictionary).

Source: wikipedia.org