Norwegian vs European

Norwegian and European both are nouns.

Word	Noun	Adjective	Verb	Adverb
Norwegian	Yes	Yes	No	No
European	Yes	Yes	No	No

As nouns, European is a hypernym of Norwegian; that is, European is a word with a broader meaning than Norwegian:

Norwegian (noun)	European (noun)
a Scandinavian language that is spoken in Norway	a native or inhabitant of Europe
a native or inhabitant of Norway

Norwegian (adjective)	European (adjective)
of or relating to Norway or its people or culture or language	of or relating to or characteristic of Europe or the people of Europe