Epistemology is concerned with

The nature of reality

The nature of values

The nature of knowledge

The nature of beliefs

The nature of justification and reasoning

Epistemology is primarily concerned with the nature of knowledge. It seeks to understand how knowledge is obtained, the criteria used to determine what counts as knowledge, and the limits of knowledge. It explores questions such as: What can we know? How do we acquire knowledge? Can we trust our senses? How do we differentiate between true and false beliefs? Epistemology also touches upon the nature of beliefs, as beliefs play a crucial role in the understanding of knowledge. However, the study of the nature of reality and values falls under other branches of philosophy, such as metaphysics and axiology respectively.