Dynamic and Static behaviour of the System?

What is meant by dynamic and static behaviour of the system?

A system can have many views which are captured through Unified Modeling Language (UML). Each view presents a certain behavior of system. Static behavior is system behavior in stable state where dynamic behavior is system behavior in varying situations. Broadly speaking, each system can have two views; static and dynamic. Static view is concerned with the static structure of the system using objects, attributes, operations and relationships. Static view includes class diagrams and composite structure diagrams. Static Dynamic view emphasizes the dynamic behavior of the system by showing collaborations among objects and changes to the internal states of objects. This view includes sequence diagrams, activity diagrams and state machine diagrams.