the three estates(n = noun.group) estate, estate of the realm - a major social class or order of persons regarded collectively as part of the body politic of the country (especially in the United Kingdom) and formerly possessing distinct political rights;
is a kind of class, social class, socio-economic class, stratum
is a part of body politic, commonwealth, country, land, nation, res publica, state
has particulars: first estate, lords spiritual, lords temporal, second estate, commons, third estate, fourth estate

estates general, prayer of azariah and song of the three children, three, three dimensional, three hundred, three kings' day, three times, three weird sisters, three year old