national leader vs Davis

national leader and Davis both are nouns.

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

national leader (noun)	Davis (noun)
a person who is a respected leader in national or international affairs	United States film actress (1908-1989)
	United States tennis player who donated the Davis Cup for international team tennis competition (1879-1945)
	American statesman; president of the Confederate States of America during the American Civil War (1808-1889)
	United States jazz musician; noted for his trumpet style (1926-1991)
	United States painter who developed an American version of cubism (1894-1964)
	English navigator who explored the Arctic while searching for the Northwest Passage (1550-1605)