This paper delves into the fundamental concepts of sociology and cultural anthropology, beginning with an introduction to these social sciences and their focus on human behavior, society, and culture. It defines social institutions as organized norms preserving societal values, categorizing them into primary (family, economics, religion, education, and the state) and secondary institutions. The paper discusses the functions of institutions, distinguishing between manifest and latent functions, and explores their interrelations and adaptability to societal changes. Furthermore, it defines social structures as organized groups of related individuals, outlining their elements (normative, position, sanction, anticipated response, and action systems) and types (universalistic-achievement, universalistic-ascription, particularistic-achievement, and particularistic-ascription patterns). The paper then provides multiple definitions of culture and examines its key elements: language, symbols, norms, values, beliefs, and cognitive elements. The analysis highlights the interconnectedness of these concepts and their significance in understanding human societies.