A coalition is an among individuals, during which they cooperate in joint action, each in their own self-interest. This alliance may be temporary or a matter of convenience. A coalition thus differs from a more formal covenant. Possibly described as a joining of 'factions'. Politics and government A coalition government, in a parliamentary system, is a government composed of a coalition of parties. In Australia, the Coalition is also used to refer to an alliance (coalition agreement) of three pa… (More on Coalition)