Duty

Commitment or obligation to someone or something or to perform an action on the behalf of

A duty is a commitment or expectation to perform some action in general or if certain circumstances arise. A duty may arise from a system of ethics or morality, especially in an honor culture. Many duties are created by law, sometimes including a codified punishment or liability for non-performance. Performing one's duty may require some sacrifice of self-interest.

This keyword could refer to multiple things. Here are some suggestions: