national leader vs Vaclav Havel

national leader and Vaclav Havel both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Vaclav Havel	Yes	No	No	No

national leader (noun)	Vaclav Havel (noun)
a person who is a respected leader in national or international affairs	Czech dramatist and statesman whose plays opposed totalitarianism and who served as president of Czechoslovakia from 1989 to 1992 and president of the Czech Republic since 1993 (born in 1936)