national leader vs Lech Walesa

national leader and Lech Walesa both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Lech Walesa	Yes	No	No	No

national leader (noun)	Lech Walesa (noun)
a person who is a respected leader in national or international affairs	Polish labor leader and statesman (born in 1943)