Republic of Turkey vs Constantinople

Republic of Turkey and Constantinople both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Turkey	Yes	No	No	No
Constantinople	Yes	No	No	No

Republic of Turkey (noun)	Constantinople (noun)
a Eurasian republic in Asia Minor and the Balkans; on the collapse of the Ottoman Empire in 1918, the Young Turks, led by Kemal Ataturk, established a republic in 1923	the second ecumenical council in 381 which added wording about the Holy Spirit to the Nicene Creed
	the fifth ecumenical council in 553 which held Origen's writings to be heretic
	the sixth ecumenical council in 680-681 which condemned Monothelitism by defining two wills in Christ, divine and human
	the council in 869 that condemned Photius who had become the patriarch of Constantinople without approval from the Vatican, thereby precipitating the schism between the eastern and western churches
	the largest city and former capital of Turkey; rebuilt on the site of ancient Byzantium by Constantine I in the fourth century; renamed Constantinople by Constantine who made it the capital of the Byzantine Empire; now the seat of the Eastern Orthodox Church