Answer:
For 1), you should also add that methods in C++ are called member functions. Thus, the difference between functions and methods in this context is analogous to the difference between functions and member functions in C++. Furthermore, languages like Java only have methods. In this case, functions would be analogous to static methods and methods would have the same meaning. For 2), you should add that a method is able to operate on the private instance (member) data declared as part of the class. Any code can access public instance data.
A function is a mathematical construct. I would say all methods are functions but not all functions are methods
Explanation:
