Epistemology is a sub field or a branch of philosophy. It tries to figure out what constitutes as knowledge. Ontology, on the other hand, is actually a subset of metaphysics, which is in turn a branch of...

Physics is the study of matter. It deals with what matter is and how it reacts with heat, light, electricity, and sound. Physics is a type of natural science. Metaphysics, on the other hand, is a branch of...