national leader vs Hosni Mubarak

national leader and Hosni Mubarak both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Hosni Mubarak	Yes	No	No	No

national leader (noun)	Hosni Mubarak (noun)
a person who is a respected leader in national or international affairs	Egyptian statesman who became president in 1981 after Sadat was assassinated (born in 1929)