Gnosiology refers to the study of knowledge or cognition and is commonly used in philosophical and psychological contexts. However, there are several synonyms to the term, which can be used interchangeably to describe the same concept. For instance, epistemology, which comes from the Greek word "episteme," refers to the study of knowledge and belief. Similarly, cognitive science refers to the interdisciplinary study of human cognition, combining elements of psychology, philosophy, and computer science. Other synonyms include ontology, the study of existence and reality, and metaphysics, which explores the fundamental nature of reality and the universe. These terms are all useful in describing the study of knowledge, perception, and thought.