Zambezi vs Victoria Falls

Zambezi and Victoria Falls both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zambezi	Yes	No	No	No
Victoria Falls	Yes	No	No	No

Zambezi (noun)	Victoria Falls (noun)
the fourth-longest river in Africa; flows into the Indian Ocean	a waterfall in the Zambezi River on the border between Zimbabwe and Zambia; diminishes seasonally
	a large waterfall on the border between Argentina and Brazil