Millionaire vs. Billionaire

Millionairenoun

(strictly) A person whose net worth is at or greater than one million units of the local currency, but less than two million.

Millionairenoun

(loosely) A person whose net worth is at or greater than one million units of the local currency; a multimillionaire.

Millionairenoun

One whose wealth is counted by millions of francs, dollars, or pounds; a very rich person; a person worth a million or more.

Millionairenoun

a person whose material wealth is valued at more than a million dollars

Millionaire

A millionaire is an individual whose net worth or wealth is equal to or exceeds one million units of currency. Depending on the currency, a certain level of prestige is associated with being a millionaire.

Billionairenoun

Somebody whose wealth is greater than one billion (109) dollars, or other currency.

Billionairenoun

a very rich person whose material wealth is valued at more than a billion dollars

Billionaire

A billionaire is a person with a net worth of at least one billion (1,000,000,000, i.e., a thousand million) units of a given currency, usually of a major currency such as the United States dollar, the euro, or the British pound. The American business magazine Forbes produces a global list of known U.S. dollar billionaires every year and updates an Internet version of this list in real time.