Asia vs Persian Empire

Asia and Persian Empire both are nouns.

Word	Noun	Adjective	Verb	Adverb
Asia	Yes	No	No	No
Persian Empire	Yes	No	No	No

Asia (noun)	Persian Empire (noun)
the nations of the Asian continent collectively	an empire in southern Asia created by Cyrus the Great in the 6th century BC and destroyed by Alexander the Great in the 4th century BC
the largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations