Saudi Arabia vs Middle East

Saudi Arabia and Middle East both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saudi Arabia	Yes	No	No	No
Middle East	Yes	No	No	No

Saudi Arabia (noun)	Middle East (noun)
an absolute monarchy occupying most of the Arabian Peninsula in southwest Asia; vast oil reserves dominate the economy	the area around the eastern Mediterranean; from Turkey to northern Africa and eastward to Iran; the site of such ancient civilizations as Phoenicia and Babylon and Egypt and the birthplace of Judaism and Christianity and Islam; had continuous economic and political turmoil in the 20th century