Republic of Cyprus vs Cyprus

Republic of Cyprus and Cyprus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of Cyprus	Yes	No	No	No
Cyprus	Yes	No	No	No

As nouns, Republic of Cyprus and Cyprus are synonyms defined as:

Republic of Cyprus and Cyprus: a country on the island of Cyprus; 80% of the people are of Greek origin and 20% or Turkish origin

Republic of Cyprus (noun)	Cyprus (noun)
a country on the island of Cyprus; 80% of the people are of Greek origin and 20% or Turkish origin	a country on the island of Cyprus; 80% of the people are of Greek origin and 20% or Turkish origin
	an island in the eastern Mediterranean