Zimbabwe vs Southern Rhodesia

Zimbabwe and Southern Rhodesia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zimbabwe	Yes	No	No	No
Southern Rhodesia	Yes	No	No	No

As nouns, Zimbabwe and Southern Rhodesia are synonyms defined as:

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

Other synonyms of Zimbabwe include Republic of Zimbabwe, Rhodesia.

Zimbabwe (noun)	Southern Rhodesia (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