national leader vs Acheson

national leader and Acheson both are nouns.

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

national leader (noun)	Acheson (noun)
a person who is a respected leader in national or international affairs	United States statesman who promoted the Marshall Plan and helped establish NATO (1893-1971)