There are actually four major divisions of philosophy; they are Epistemology, Metaphysics, Logic and Ethics. But these four divisions are under Dualism and Non Dualism.

Metaphysics is the branch of philosophy concerned with the nature of reality, existence, and being, while epistemology focuses on the nature and scope of knowledge, including its origins and validity.

How can non-physical interact with the physical?

In cartesian dualism the pineal gland was seen as the point of connection, we now know the pineal gland controls the sleep-wake cycle.

But there are loads, wiki is a good place to start.

Dualism - album - was created on 2011-09-23.

Dualism is economic and social divisions of an economy. The social dualism in India is the coexistence of advanced science, superstitions and the cost system. Technical dualism in India is the Green Revolution in the top 10% of their rural population. Geographical dualism is the labor migration, capital movements and trade.