well.. rather than say its making use, its give and take; its
sharing. and most important of all, its voluntarily. i can ask you
to do something but you have to do it willingly and the converse is
true. this is different from say an employer-employee relationship
which is more transactional because of the terms involved. one wont
call that a friendship.
and you have also pointed out the other important characteristic of
friendship - that is, doing something for the other party without
having the party to ask.
of course, the extent and depth of the "things" that one does when
asked and even when not asked is influenced by how deep the
friendship is.
