national leader vs Radhakrishnan

national leader and Radhakrishnan both are nouns.

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

national leader (noun)	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)