national leader vs Sir Thomas More

national leader and Sir Thomas More both are nouns.

Word	Noun	Adjective	Verb	Adverb
national leader	Yes	No	No	No
Sir Thomas More	Yes	No	No	No

national leader (noun)	Sir Thomas More (noun)
a person who is a respected leader in national or international affairs	English statesman who opposed Henry VIII's divorce from Catherine of Aragon and was imprisoned and beheaded; recalled for his concept of Utopia, the ideal state