national leader vs Lucius Quinctius Cincinnatus

national leader and Lucius Quinctius Cincinnatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Lucius Quinctius Cincinnatus	Yes	No	No	No

national leader (noun)	Lucius Quinctius Cincinnatus (noun)
a person who is a respected leader in national or international affairs	Roman statesman regarded as a model of simple virtue; he twice was called to assume dictatorship of Rome and each time retired to his farm (519-430 BC)