function

the actions and activities assigned to or required or expected of a person or group

“the function of a teacher”

a relation such that one thing is dependent on another

“height is a function of age”

perform as expected when applied

a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)

a vaguely specified social event

“a seemingly endless round of social functions”

serve a purpose, role, or function

“The table functions as a desk”

what something is used for

“the function of an auger is to bore holes”

a set sequence of steps, part of larger computer program

perform duties attached to a particular office or place or function

a formal or official social gathering or ceremony

“it was a black-tie function”