The Adapter pattern is a design pattern used to convert the interface of one class into another interface that a client is expecting. This allows classes with incompatible interfaces to work together.

The Decorator pattern adds behavior to an object dynamically, while the Proxy pattern provides a substitute for an object to control access to it

Proxy pattern is a design pattern that allows objects to represent or act on behalf of other objects, providing a level of indirection between the client and the target object. The pattern involves creating a proxy class that acts as an intermediary between the client and the target object. This pattern can be useful in situations where you want to add additional functionality or control access to an object, without affecting the behavior of the target object.

Composite Entity pattern is used to represent entities that have a tree structure, such as an organizational chart.

The Memento pattern is a design pattern that captures the internal state of an object, allowing the object to be restored to this state later. The Memento pattern is used to capture and store the internal state of an object so that it can be restored at a later time, without violating the object's encapsulation. The Memento pattern is used to implement undo/redo functionality in applications.

The Null Object pattern provides an object as a substitute for a null reference, avoiding the need for checking for null values.

Business Delegate pattern provides a simplified interface to a set of services to reduce the coupling between presentation-tier clients and business services.

The Builder Pattern is used when the construction of an object is complex, and it allows you to build objects step by step, with each step having a different number of options. This is useful when you want to provide a clean API for creating objects, without exposing the details of the creation process. The Factory Pattern, on the other hand, is used when you need to create objects with a single method call. This is useful when the creation process is simple, and you don't need to provide a clean API for creating objects.

Decorator pattern is a design pattern that allows objects to be decorated with additional responsibilities, dynamically, at runtime. The pattern involves creating a decorator class that wraps the original object, adding the new responsibilities to the original object's behavior. This pattern can be useful in situations where you want to add or remove responsibilities from objects dynamically, without affecting the behavior of the original objects.

The Service Locator pattern is used to maintain a centralized registry of service objects, and provides a single point of access for clients to access the services through a locator object.