noun
Refers specifically to the vice president of a nation, not a company or organization.
アメリカの副大統領は上院議長を兼ねる。
The Vice President of the United States also serves as President of the Senate.
副社長 is vice president of a company, while 副大統領 is vice president of a country.
Compound of 副 (vice, assistant) and 大統領 (president of a country).