statesman vs national leader

statesman and national leader both are nouns.

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

As nouns, national leader is a hypernym of statesman; that is, national leader is a word with a broader meaning than statesman:

statesman: a man who is a respected leader in national or international affairs
national leader: a person who is a respected leader in national or international affairs

Other hypernyms of statesman include adult male, man, solon.

statesman (noun)	national leader (noun)
a man who is a respected leader in national or international affairs	a person who is a respected leader in national or international affairs