La palabra del día: Diligencia

Feminine noun. In business Spanish diligencia is the processing of an administrative matter, and written proof of having done it. E.g.: Esta diligencia no figuraba en el expediente del sumario: No such protocol was in the case file. In this case the verb is diligenciar. E.g.: No hay documentación que diligenciar: No paper work to complete.
Diligencia can also mean diligence, care. E.g.: Actuar con la misma cautela, diligencia y pericia que una persona de prudencia razonable en circunstancias similares: Exercise the care, diligence and skill that a reasonably prudent person would exercise in comparable circumstances.
By the way, a diligencia is also a stagecoach. dc