The fondness and appreciation of the other. It is not just friendship, but also loyalties to family, job or discipline.
Philia for another may be motivated, as Aristotle explains in the Nicomachean Ethics, Book VIII, for the agent’s sake or for the other’s own sake.
Aristotle elaborates on the kinds of things we seek in proper friendship, suggesting that the proper basis for philia is objective: those who share our dispositions, who bear no grudges, who seek what we do, who are temperate, and just, who admire us appropriately as we admire them.