capacity

the amount that can be contained

“the gas tank has a capacity of 12 gallons”

an electrical phenomenon whereby an electric charge is stored

the susceptibility of something to a particular treatment

the power to learn or retain knowledge; in law, the ability to understand the facts and significance of your behavior

a specified function

“he was employed in the capacity of director”

capability to perform or produce

“among his gifts is his capacity for true altruism”

the amount of information (in bytes) that can be stored on a disk drive

“the capacity of a hard disk drive is usually expressed in megabytes”

the maximum production possible

“the plant is working at 80 per cent capacity”

tolerance for alcohol

“he had drunk beyond his capacity”