Answers for "oop 4 principles"

oop principles

Abstraction (Partial Abstraction & Interfaces)
Encapsulation (Private Field & Getter & Setter)
Inheritance (Super and Sub Class)
Polymorphism (Static - Overloading & Dynanmic - Overriding)

oop design principles

Below mentioned respectively Pillers of OOP concept 
and Principles of OOP Design (SOLID)

Pillers of OOP concept
1. Abstraction
2. Encapsulation
3. Inheritance
4. Polymorphism

Principles of OOP Design
1. Single Responsibility Principle (SRP)
2. Open-Closed Principle (OCP)
3. Liskov Substitution Principle (LSP)
4. Interface Segregation Principle (ISP)
5. Dependency Inversion Principle (DIP)