'Theology', a term of Attic Greek origin, signifies metaphysics, or "the logic[cal study], of God [that is, the non-movable, non-sensible substance]," (see Aristotle's Metaphysics 1025b3-6a32). Monotheist theologians clarify theoretical controversies in sacred text by employing this sense of metaphysics, for example The Guide of the Perplexed by Moses Maimonides(1135-1204) and Summa Theological by Saint Thomas Aquinas (1224-1274). "Popular" theology taught to Muslims differs from the sophisticated technical scholarship found in, "scholastic types of theology," known as kalam [lit. "The word," or logos], philosophical theology, and mystical theology.
