A matter or task that needs to be attended to, often pre-arranged or planned in advance, which may require attention or action at a specific time.

An obligation or engagement that involves completing a specific duty or responsibility, sometimes related to personal affairs or errands.

A task or business that may not seem significant but is necessary to manage daily life or obligations, often leading to the completion of other activities.

A specific action or series of actions that one must undertake, usually associated with fulfilling commitments or responsibilities and can involve communication or errands.