national leader vs Klemens Metternich

national leader and Klemens Metternich both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Klemens Metternich	Yes	No	No	No

national leader (noun)	Klemens Metternich (noun)
a person who is a respected leader in national or international affairs	Austrian statesman (1773-1859)