What is the difference between 'call by value' and 'call by reference' in $C++?$

Call by value passes the actual value of the argument, while call by reference passes a copy of the argument.

Call by value passes a reference to the argument, while call by reference passes the actual value of the argument

Call by value creates a local copy of the argument, while call by reference directly manipulates the original argument.

$$ Call by value and call by reference are the same thing in $C++$