national leader vs Lorenzo the Magnificent

national leader and Lorenzo the Magnificent both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Lorenzo the Magnificent	Yes	No	No	No

national leader (noun)	Lorenzo the Magnificent (noun)
a person who is a respected leader in national or international affairs	Italian statesman and scholar who supported many artists and humanists including Michelangelo and Leonardo and Botticelli (1449-1492)