To be fair, if form and function are the same, then this entire question is tautological. (which is a valid perspective)

For example:

• You could make a fork that stabs food perfectly (function).
• You could make that fork shiny, with ornate designs (form).

You could say that both are examples of function, because artistic beauty has a functional purpose (to enhance free expression, and emotional impact).

And that is the frivolity of words… They are mostly redundant (and exist for the beauty of form (which is a function)).