1.A class is a template for creating objects in program but object is an instance of a class.
2.A class is a logical entity but object is a physical entity.
3.A class does not allocate memory space when it is created but object allocates memory space whenever they are created.
4.We can declare class only once but we can create more than one object using a class.
5.Classes can’t be manipulated as they are not available in memory but they can be manipulated.
For example: Mobile is a class and Samsung,Google pixel, Xiaomi etc is a object.