Republic of Zimbabwe vs Zimbabwe

Republic of Zimbabwe and Zimbabwe both are nouns.

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

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

Republic of Zimbabwe and Zimbabwe: a landlocked republic in south central Africa formerly called Rhodesia; achieved independence from the United Kingdom in 1980

Other synonyms of Republic of Zimbabwe include Rhodesia, Southern Rhodesia.

Republic of Zimbabwe (noun)	Zimbabwe (noun)
a landlocked republic in south central Africa formerly called Rhodesia; achieved independence from the United Kingdom in 1980	a landlocked republic in south central Africa formerly called Rhodesia; achieved independence from the United Kingdom in 1980