national leader vs Sun Yixian

national leader and Sun Yixian both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Sun Yixian	Yes	No	No	No

national leader (noun)	Sun Yixian (noun)
a person who is a respected leader in national or international affairs	Chinese statesman who organized the Kuomintang and led the revolution that overthrew the Manchu dynasty in 1911 and 1912 (1866-1925)