function

The natural purpose or intended role of a person, mechanism, or system.

• The main function of the heart is to pump blood throughout the body.

• Does this decorative button serve any practical function?

A large or formal social event, ceremony, or gathering.

• Staff members are expected to attend the annual corporate function downtown.

• Have you decided what to wear to tomorrow night's charity function?

Something that depends on and changes with something else.

• The product's ultimate success is a direct function of consistent customer support.

• Is investment growth purely a function of market timing?

To operate or perform an intended activity in a normal way.

• The microwave still functions properly despite the minor dent on the door.

• How can anyone function on only four hours of sleep?

To work or be used as something, often in place of something else.

• The spare bedroom also functions as a home office.

• Can this sofa function as a bed for guests?