There are about 1,800 billionaires in the world. - Dünyada yaklaşık 1.800 milyarder vardır.
Tom is a billionaire, not a millionaire. - Tom milyoner değil milyarderdir.
Somebody whose wealth is greater than one billion (109) dollars, or other currency
A billionaire is an extremely rich person who has money or property worth at least a thousand million pounds or dollars. someone who has more than a billion dollars or pounds