Seneca the Younger vs national leader

Seneca the Younger and national leader both are nouns.

Word	Noun	Adjective	Verb	Adverb
Seneca the Younger	Yes	No	No	No
national leader	Yes	No	No	No

Seneca the Younger (noun)	national leader (noun)
Roman statesman and philosopher who was an advisor to Nero; his nine extant tragedies are modeled on Greek tragedies (circa 4 BC - 65 AD)	a person who is a respected leader in national or international affairs