national leader vs Sarvepalli Radhakrishnan

national leader and Sarvepalli Radhakrishnan both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Sarvepalli Radhakrishnan	Yes	No	No	No

national leader (noun)	Sarvepalli Radhakrishnan (noun)
a person who is a respected leader in national or international affairs	Indian philosopher and statesman who introduced Indian philosophy to the West (1888-1975)