national leader vs Fridtjof Nansen

national leader and Fridtjof Nansen both are nouns.

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

national leader (noun)	Fridtjof 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)