> Similarly in Lisp, (a list-oriented language) both functions and arrays are lists.

In which Lisp? Try this in Common Lisp and it won't work too well:

  (let ((array (make-array 20)))
    (car array))

What is the car of an array? An array in Lisp (since Lisp 1.5 at least, I haven't read earlier documentation) is an array, and not a list. It does not behave as a list in that you cannot construct it with cons, and you cannot deconstruct it with car or cdr.