Norwegian language vs Norse

Norwegian language and Norse both are nouns.

Word	Noun	Adjective	Verb	Adverb
Norwegian language	Yes	No	No	No
Norse	Yes	Yes	No	No

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

Norwegian language: a Scandinavian language that is spoken in Norway
Norse: the northern family of Germanic languages that are spoken in Scandinavia and Iceland

Other hypernyms of Norwegian language include Nordic, North Germanic, North Germanic language, Scandinavian, Scandinavian language.

Norwegian language (noun)	Norse (noun)
a Scandinavian language that is spoken in Norway	the northern family of Germanic languages that are spoken in Scandinavia and Iceland
	a native or inhabitant of Norway
	an inhabitant of Scandinavia

Norwegian language (adjective)	Norse (adjective)
	of or relating to Norway or its people or culture or language
	of or relating to Scandinavia or its peoples or cultures