Benin City was the capital of the Empire of Benin, of which the Bight of Benin, the body of water, was named after. The country of Benin was named after the Bight of Benin which is named after the Empire of Benin which is named after the City of Benin.
Taiwan is as China as China, as China claims China is part of China, and China claims that China is not really China. So whichever side you stand, you think China is China.
Makes sense?