Mackenzie vs Mackenzie River

Mackenzie and Mackenzie River both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mackenzie	Yes	No	No	No
Mackenzie River	Yes	No	No	No

As nouns, Mackenzie and Mackenzie River are synonyms defined as:

Mackenzie and Mackenzie River: a Canadian river; flows into the Beaufort Sea

Mackenzie (noun)	Mackenzie River (noun)
a Canadian river; flows into the Beaufort Sea	a Canadian river; flows into the Beaufort Sea
Canadian explorer (born in England) who explored the Mackenzie River and who was first to cross North America by land north of Mexico (1764-1820)