ok i get it but non of the courses i learnt told me that you can call a class. i mean they taught me only functions can be called . can classes be called then what component in classes are we calling is it that we are passing arguments using brackets(ie class(argument1,argument2)) and we are useing these arguments to get values for processing i mean if we call a function it returns a value but if we call a class what does it return (a value?)