distinguish between a classand an instantiation of a class

A class and an instantiation of a class are two fundamental concepts in object-oriented programming.

1. Class: A class is a blueprint or a template for creating objects. It is an abstract data type that encapsulates data and functions that manipulate the data. The data elements are called attributes, and the functions are called methods. A class defines the types of data and the operations that can be performed on the data.

2. Instantiation of a Class: An instantiation of a class, also known as an object, is a realization of the class. When a class is defined, no memory is allocated but when it is instantiated (i.e., an object is created) memory is allocated. An object is an instance of a class, and it can perform the functionalities which are defined in the class.

In simple terms, if a class is a blueprint, an instantiation is an individual object created from that blueprint. For example, if you have a class 'Car' with attributes like color, brand, speed etc., an instantiation of the class 'Car' could be a specific car, say a red Ferrari traveling at 60mph.