Reef vs Witwatersrand

Reef and Witwatersrand both are nouns.

Word	Noun	Adjective	Verb	Adverb
Reef	Yes	No	No	No
Witwatersrand	Yes	No	No	No

As nouns, Reef and Witwatersrand are synonyms defined as:

Reef and Witwatersrand: a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese

Other synonyms of Reef include Rand.

Reef (noun)	Witwatersrand (noun)
a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese	a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese