An object is a representation of a real-world entity eg teacher, aeroplane, mobile phone, cat etc
A class is like a blueprint that describes the properties and behaviours of objects, while an object is a specific instance created based on that blueprint with its own unique values for the properties
A constructor is a special method within a class that is automatically called when an object of that class is created (instantiated)
Constructors typically define the initial values of instance variables and perform any necessary setup to prepare the object for use
