Constructors are used to initialize an object, while methods are used to perform actions on an object. In other words, constructors create objects and methods define what they do. Another key difference is that constructors are called when an object is created, while methods are called when an action is performed on an object.   For example, if you were creating a Dog class, the constructor would be called when you create a new Dog object, while a method would be called when you tell the Dog to sit or fetch. Finally, constructors have the same name as the class they're contained in, while methods can have any name. This naming convention helps to distinguish between the two.