As a noun fuel

is substance consumed to provide energy through combustion, or through chemical or nuclear reaction.

As a verb fuel

is to provide with fuel.

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.

As an adjective quick

is moving with speed, rapidity or swiftness, or capable of doing so; rapid; fast.

As an adverb quick

is (colloquial) with speed, quickly.

As a noun quick

is raw or sensitive flesh, especially that underneath finger and toe nails.

As a verb quick

is to amalgamate surfaces prior to gilding or silvering by dipping them into a solution of mercury in nitric acid.

As a symbol qar is

qatari rial.

As a noun access

is (uncountable) a way or means of approaching or entering; an entrance; a passage.

As a verb access

is to gain or obtain access to.

As a symbol qar is

qatari rial.

As a noun recorder

is an apparatus for recording; a device which records or recorder can be (musici) a musical instrument of the woodwind family, fipple flute, a simple internal duct flute.

As a symbol qar is

qatari rial.

As nouns the difference between water and storativity

is that water is (uncountable) a chemical, found at room temperature and pressure as a clear liquid, having the formula h₂o, required by all forms of life on earth while storativity is (geology) the volume of water released from storage per unit decline in hydraulic head in a confined aquifer, per unit area of the aquifer symbol: s.

As a verb water

is to pour water into the soil surrounding (plants).

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.

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.

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.

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.