Middle East vs Islamic Republic of Iran

Middle East and Islamic Republic of Iran both are nouns.

Word	Noun	Adjective	Verb	Adverb
Middle East	Yes	No	No	No
Islamic Republic of Iran	Yes	No	No	No

Middle East (noun)	Islamic Republic of Iran (noun)
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	a theocratic Islamic republic in the Middle East in western Asia; Iran was the core of the ancient empire that was known as Persia until 1935; rich in oil