What is the difference between Abstraction and Polymorphism

Question

I seem to not understand two OOP concepts very well. Could you explain what abstraction and polymorphism are, preferably with real examples and

Answer 1

In simple term, Abstraction is conceptual and Poly is behavioral. In order to achieve abstraction in OOP, you need Poly.

Abstraction in object oriented programming is a concept or design pattern I may say, which enables better isolation, loosely coupling thus testability, and reusability and extensibility. In order to achieve all, we need poly, inheritance/extension and etc.