national leader vs Balfour

national leader and Balfour both are nouns.

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

national leader (noun)	Balfour (noun)
a person who is a respected leader in national or international affairs	English statesman; member of the Conservative Party (1848-1930)