Lake Tanganyika vs Africa

Lake Tanganyika and Africa both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lake Tanganyika	Yes	No	No	No
Africa	Yes	No	No	No

Lake Tanganyika (noun)	Africa (noun)
the longest lake in the world in central Africa between Tanzania and Congo in the Great Rift Valley	the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean