national leader vs Anicius Manlius Severinus Boethius

national leader and Anicius Manlius Severinus Boethius both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Anicius Manlius Severinus Boethius	Yes	No	No	No

national leader (noun)	Anicius Manlius Severinus Boethius (noun)
a person who is a respected leader in national or international affairs	a Roman who was an early Christian philosopher and statesman who was executed for treason; Boethius had a decisive influence on medieval logic (circa 480-524)