The amount of energy required is called the ionization potential.

The amount a person spends at one company is sometimes called the "relationship revenue".

The amount they are willing to pay is called bid rent.

The amount people will pay is called a bid.

The amount of the drug taken is called a dose.

The right amount of curve is called your neutral position.

The amount of benefits the household gets is called an allotment.

The amount of copies made is called the print run.

The concentration and amount of uranium-235 needed to achieve this is called a 'critical mass'.

This amount is also called the face value or death benefit of a life insurance policy.