megamillionaire

As nouns the difference between taxonomy and megamillionaire

is that taxonomy is the science or the technique used to make a classification while megamillionaire is a person who has many times more than one million units of the local currency, but who is not a billionaire.

As a numeral billion

is a milliard, a thousand million: 1 followed by nine zeros, 10⁹.

As a noun megamillionaire is

a person who has many times more than one million units of the local currency, but who is not a billionaire.

Supermillion is likely misspelled.

Supermillion has no English definition.

As a noun megamillionaire is

a person who has many times more than one million units of the local currency, but who is not a billionaire.

As an adjective multimillion

is having more than 2,000,000 in the million range.

As a noun megamillionaire is

a person who has many times more than one million units of the local currency, but who is not a billionaire.

As nouns the difference between billionaire and megamillionaire

is that billionaire is somebody whose wealth is greater than one billion (10⁹) dollars, or other currency while megamillionaire is a person who has many times more than one million units of the local currency, but who is not a billionaire.

Megamillionaire is a related term of million.

As a numeral million

is the cardinal number 1,000,000: 10⁶.

As a noun megamillionaire is

a person who has many times more than one million units of the local currency, but who is not a billionaire.