Is static polymorphism is polymorphism? Support your answer with solid reasons

The word polymorphism means having many forms. In object-oriented programming paradigm, polymorphism is often expressed as 'one interface, multiple functions'.

Polymorphism can be static or dynamic.

In static polymorphism the response to a function is determined at the compile time.

In dynamic polymorphism , it is decided at run-time.

Static Polymorphism
The mechanism of linking a function with an object during compile time is called early binding. It is also called static binding. C# provides two techniques to implement static polymorphism. These are:

Function overloading

Operator overloading

Dynamic Polymorphism

C# allows you to create abstract classes that are used to provide partial class implementation of an interface. Implementation is completed when a derived class inherits from it. Abstract classes contain abstract methods, which are implemented by the derived class. The derived classes have more specialized functionality.

Please note the following rules about abstract classes:

You cannot create an instance of an abstract class

You cannot declare an abstract method outside an abstract class

When a class is declared sealed, it cannot be inherited, abstract classes cannot be declared sealed.

Please read below article for the examples.

C# - Polymorphism