auxiliary troops
foreign troops a prince uses to fight his own wars; often a ready-made unit
civil principate
a state in which a private citizen becomes prince by the choice of other citizens
hereditary principate
a state in which the prince is simply descended from a line of rulers; power is handed from one family member to the next
mercenary troops
soldiers a prince hires to fight for him, often culled from a variety of places
principate/principality
any state ruled by a prince