national leader vs Nansen

national leader and Nansen both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Nansen	Yes	No	No	No

national leader (noun)	Nansen (noun)
a person who is a respected leader in national or international affairs	Norwegian explorer of the Arctic and director of the League of Nations relief program for refugees of World War I (1861-1930)