Methods and constructors are fundamental concepts in object-oriented programming (OOP). Methods are functions defined within a class that perform specific actions or computations on the class’s data. They can take parameters and return values, allowing for dynamic behavior based on input. Constructors, on the other hand, are special methods invoked when an object of a class is created. Their primary role is to initialize the object’s attributes and set up its initial state. Unlike regular methods, constructors do not have a return type and must share the same name as the class. Understanding both is essential for effective OOP design.