national leader vs Niccolo Machiavelli

national leader and Niccolo Machiavelli both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Niccolo Machiavelli	Yes	No	No	No

national leader (noun)	Niccolo Machiavelli (noun)
a person who is a respected leader in national or international affairs	a statesman of Florence who advocated a strong central government (1469-1527)