country adjective countable noun plural or collective noun

Arabic (lang) an Arab (man/woman), two Arabs (men) (the) Arabs

Arabian (desert)
Denmark Danish a Dane (man/woman), two Danes (men) (the) Danes or the Danish

Finland Finnish a Finn (man/woman), two Finns (men) (the) Finns or the Finnish

Phillipmes Phillipine a Filipino (man/woman), two Filipinos (men) (the) Filipinos

Poland Polish a Pole (man/woman), two Poles (men) (the) Poles

Spain Spanish a Spaniard/two Spaniards (men), (the) Spaniards or

a Spanish woman the Spanish

Sweden Swedish a Swede (man/woman), two Swedes (men) (the) Swedes/the Swedish

Turkey Turkish a Turk (man/woman), two Turks (men) (the) Turks

Group 4: Identifying characteristics

1 The adjective and plural noun (meaning 'all the people') are the same, the is always required adjective: English customs noun: The English are very inventive

2 The singular noun is composed of the adjective + -man or -woman

Country adjective countable noun plural or collective noun

England English an EnglishmanZ-woman, the English (also

two EnglishmenZ-women Englishmen)

France French a FrenchmanZ-woman, the French (also

two FrenchmenZ-women Frenchmen)

Holland (or Dutch a DutchmanZ-woman, the Dutch (also

the Netherlands) two Dutchmen!-women Dutchmen)

Ireland Irish an InshmanZ-woman, two InshmenZwomen the Irish (also Irishmen)

Wales Welsh a WelshmanZ-woman, the Welsh (also

two WelshmenZ-women Welshmen)

Group 5: Two exceptions

Britain British a Briton (man/woman), Britons (fairly rare) the British

a Britisher (AmE) Britishers (AmE)

Scotland Scottish a Scot (man/woman), a ScotsmanZ-woman (the) Scots

two ScotsmenZ-women (and note Scotch whisky)