What is the difference between defining a class and creating its instance?

Class definition is the creation of a template or description of an object, which specifies its properties (attributes) and behavior (methods). It is like a blueprint or instruction.

Creating an instance of a class is the process of creating a specific object based on this template. An instance is a real object in memory that you can work with.

Example in Python:

class Car:
    def __init__(self, model):
        self.model = model

# Class definition for Car

my_car = Car("Toyota")  # Creating an instance of the Car class
print(my_car.model)  # Output: Toyota