Muscat and Oman vs Asia

Muscat and Oman and Asia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Muscat and Oman	Yes	No	No	No
Asia	Yes	No	No	No

Muscat and Oman (noun)	Asia (noun)
a strategically located monarchy on the southern and eastern coasts of the Arabian Peninsula; the economy is dominated by oil	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