1‘the prince of a neighbouring state’
ruler, sovereign, lord, overlord, dynast, leader, monarch, crowned head
royal duke, king, emperor, tsar, grand duke, elector, potentate, suzerain, crown prince, princeling, prince regent, mogul, baron, liege, liege lord
emir, sheikh, sultan, maharaja, raja
We take a look at several popular, though confusing, punctuation marks.