POP, or procedural-oriented programming, is a programming paradigm that focuses on writing code as a series of procedures or functions that perform specific tasks. It is based on the concept of modularity, which involves breaking down a larger problem into smaller, more manageable pieces and solving them individually.

OOP, or object-oriented programming, is a programming paradigm that focuses on using objects and their interactions to design and write code. It is based on the concept of encapsulation, which involves bundling data and functions that operate on that data within a single unit or object. OOP also involves the concepts of inheritance, which allows objects to inherit characteristics and behavior from parent objects, and polymorphism, which allows objects to take on multiple forms.

In summary, POP is centered around the idea of breaking down problems into smaller procedures and functions, while OOP is centered around the idea of using objects and their interactions to design and write code.