Politics
The word comes from the same Greek word from which the title of Aristotle's book "Politics" (Πολιτικά, "Polis") also derives; "polis" means "affairs of the cities". The book title was rendered in Early Modern English in the mid-15th century as "Polettiques"; it became "politics" in Modern English. The singular "politic" first attested in English 1430 and comes from Middle French "politique", in turn from Latin "politicus", which is the Latinization of the Greek πολιτικός ("politikos"), meaning amongst others "of, for, or relating to citizens", "civil", "civic", "belonging to the state", in turn from πολίτης ("polites"), "citizen" and that from πόλις ("polis"), "city".
Political faction
Occasionally, the term "faction" is still used more or less as a synonym for political party, but "with opprobrious sense, conveying the imputation of selfish or mischievous ends or turbulent or unscrupulous methods", according to the Oxford English Dictionary. In his Dictionary, Samuel Johnson (a Tory) dismissively defined Whig as "the name of a faction". Similarly, in the tenth instalment of The Federalist Papers, James Madison defines a faction as "a number of citizens, whether amounting to a minority or majority of the whole, who are united and actuated by some common impulse of passion, or of interest, adverse to the rights of other citizens, or to the permanent and aggregate interests of the community." In plain English this is a group that pursues self-interest at the expense of the greater good.