Norse vs Northman

Norse and Northman both are nouns.

Word	Noun	Adjective	Verb	Adverb
Norse	Yes	Yes	No	No
Northman	Yes	No	No	No

As nouns, Norse and Northman are synonyms defined as:

Other synonyms of Norse include Scandinavian.

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

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