Activity

Activity is a class in the Top level CB-NL. An activity is something happening or changing. 

• Action: A singular activity. For example, bridging, bearing, insulating, or masonry.
• Function: Providing a service as a measurable capability of a product.
• Measure: An activity with the intent of reaching a condition.
• Interaction: A kind of action that occurs as two or more objects have an effect upon one another. For example, risk.