ZAIRE (River & Country) Portuguese, English
Older name of the Congo
River, said to be derived via Portuguese from Kikongo nzadi o nzere
meaning "river swallowing rivers". This was also the former name of the Democratic Republic of the Congo.
ZHONGGUO (Country) Chinese
Means "middle kingdom", from Chinese 中 (zhōng)
meaning "middle" and 国 (guó)
meaning "country, state". This is the Chinese name for China
. The name originally referred to China's central regions, as opposed to the territory on the fringes.