national leader vs Pericles

national leader and Pericles both are nouns.

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

national leader (noun)	Pericles (noun)
a person who is a respected leader in national or international affairs	Athenian statesman whose leadership contributed to Athens' political and cultural supremacy in Greece; he ordered the construction of the Parthenon (died in 429 BC)