Wallis and Futuna: noun: Wallisian(s), Futunan(s), or Wallis and Futuna Islanders
adjective: Wallisian, Futunan, or Wallis and Futuna Islander
West Bank: noun: NA
adjective: NA
Western Sahara: noun: Sahrawi(s), Sahraoui(s)
adjective: Sahrawian, Sahraouian
Yemen: noun: Yemeni(s)
adjective: Yemeni
Yugoslavia: noun: Serb(s); Montenegrin(s)
adjective: Serbian; Montenegrin