national leader vs David Grun

national leader and David Grun both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
David Grun	Yes	No	No	No

national leader (noun)	David Grun (noun)
a person who is a respected leader in national or international affairs	Israeli statesman (born in Poland) and active Zionist who organized resistance against the British after World War II; prime minister of Israel (1886-1973)