Roman Empire vs Asia

Roman Empire and Asia both are nouns.

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

Roman Empire (noun)	Asia (noun)
an empire established by Augustus in 27 BC and divided in AD 395 into the Western Roman Empire and the eastern or Byzantine Empire; at its peak lands in Europe and Africa and Asia were ruled by ancient Rome	the nations of the Asian continent collectively
	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