rēgia, ae [rēgius], f. (sc. domus), a palace.
rēgīna, ae [rēx], f., a queen.
regiō, ōnis [regō], f., district, region.
rēgius [rēx], adj., kingly, royal, king’s.
rēgnō, āre, āvī, ātus [rēgnum], to be king; rule, govern.
rēgnum, ī [rēx], n., kingly government, sovereignty, sway; a kingdom.
[regō, ere, rēxī, rēctus], to keep straight, guide, conduct, rule.
con—corrigō, ere, rēxī, rēctus, to straighten, correct, improve.
dis—dīrigō, ere, rēxī, rēctus, to guide, steer, direct.
ex—ērigō, ere, rēxī, rēctus, to raise or lift up; stir up, arouse.