CITIZEN A member of a free city or jural society, (civitas.) possessing all the rights and privileges which can be enjoyed by any person under its constitution and government, and subject to the corresponding duties. [Black’s Law Dictionary]
SOVEREIGN A chief ruler with supreme power; a king or other ruler with limited power. [Black’s Law Dictionary]
OXYMORON a figure of speech in which apparently contradictory terms appear in conjunction. [Oxford Dictionary]