Asia vs Muscat and Oman

Asia and Muscat and Oman both are nouns.

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

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