Many cultural and linguistic differences make Brunei Malays distinct from the larger Malay populations in nearby Malaysia and Indonesia, even though they are ethnically related and share the Muslim religion. Brunei has hereditary nobility, carrying the title Pengiran. The Sultan can award to commoners the title Pehin, the equivalent of a life peerage awarded in the United Kingdom. The Sultan also can award his subjects the title Dato, the equivalent of a knighthood in the United Kingdom, and Datin, the equivalent of damehood.Bruneians adhere to the practice of using complete full names with all titles, including the title Haji (for men) or Hajah (for women) for those who have made the Haj pilgrimage to Mecca. Many Brunei Malay women wear the tudong, a traditional head covering. Men wear the songkok, a traditional Malay cap. Men who have completed the Haj can wear a white songkok