Metaphysics

Metaphysics is a broad area of philosophy marked out by two types of inquiry. The first aims to be the most general investigation possible into the nature of reality: are there principles applying to everything that is real, to all that is? – if we abstract from the particular nature of existing things that which distinguishes them from each other, what can we know about them merely in virtue of the fact that they exist? The second type of inquiry seeks to uncover what is ultimately real, frequently offering answers in sharp contrast to our everyday experience of the world – Routledge Encyclopedia of Philosophy

The branch of philosophy that examines the nature of reality, including the relationship between mind and matter, substance and attribute, fact and value – Farlex Dictionary