This document provides an overview of key concepts related to research philosophy. It discusses epistemology, ontology, axiology, and methodology. Epistemology is concerned with the nature and scope of knowledge. Ontology addresses basic assumptions about the nature of reality. Axiology studies the nature of value or worth. Methodology refers to the principles and procedures used in a field of study. The document also provides definitions and explanations of these philosophical concepts and how they relate to conducting research.