List what the concept of structural things includes.

What will be an ideal response?

The concept of structural things includes:

A. Classes, which have properties or attributes and methods or operations.
B. Interfaces, the behavior of a class or component of a system that is noticeable from outside the class or component.
C. Collaborations, which describe the interactions of two or more things in a system that perform a behavior that is more than any one of the things can do alone.
D. Use cases, which describe a series of actions that demonstrate a distinct behavior of the system and its interactions with the actors.
E. Control or active classes. A control class can initiate and control an independent flow of activity within the system.
F. Components, which are a physical part of a system that represents the services and interfaces implemented by the elements contained within that component, including software code.
G. Nodes, which represent a piece of hardware on which your system executes. Components are physically deployed on nodes.