res publica(n = noun.group) body politic, commonwealth, country, land, nation, state - a politically organized body of people under a single government; "the state has elected a new president"; "African nations"; "students who had come to the nation's capitol"; "the country's largest manufacturer"; "an industrialized land"
is a kind of political entity, political unit
has parts: estate, estate of the realm, the three estates
has particulars: commonwealth country, developing country, dominion, foreign country, reich, renegade state, rogue nation, rogue state, suzerain, sea power, great power, major power, power, superpower, world power, city-state, city state, ally, eelam, tamil eelam

res, res adjudicata, res gestae, res ipsa loquitur, res judicata