ruler

czar emperor king monarch shah sultan

baron baroness caesar caliph count countess czarina dame duchess duke dynast empress kaiser khan lady lord magnate maharajah maharani majesty mikado mogul oligarch overlord pasha pharaoh potentate prince princess queen rajah rani rex royal sovereign sultana tycoon

contessa crowned head gerent imperator

commoner subject

T-square measure rule straightedge yardstick

folding rule measuring stick slide rule