alliance, confederation -- (the state of being allied or confederated)
alliance, bond -- (a connection based on kinship or marriage or common interest; "the shifting alliances within a large family"; "their friendship constitutes a powerful bond between them")
alliance, coalition, alignment, alinement -- (an organization of people (or countries) involved in a pact or treaty)
alliance -- (a formal agreement establishing an association or alliance between nations or other groups to achieve a particular aim)
confederation, alliance -- (the act of forming an alliance or confederation)