Communication is inseparable from social and behavioral activities; as a consequence it has become an integral part of research and discussion in the social sciences. Mass media and rhetoric thus closely relate to political science, while semantics and rhetoric enrich the study of law.
Communication studies integrates aspects of both social sciences and the humanities. Much of the work being done in the field is academic in nature. As a social science, the discipline often overlaps with sociology, psychology, anthropology, biology, political science, economics, and public policy, amongst others.
Economics is a social science because it examines the social behavior of human beings with regards to allocation of scarce resources in order to meet the needs of each individual in the society. Economics does not only involve production and distribution of goods and services, but also the human factor.
But generally it is seen as a social science alongside economics, politics, sociology, business studies etc. Law is a professional subject and not a liberal arts. The library of congress (US) puts it under social sciences but universities usually put it as a professional school.
Social science as a whole has many branches, each of which is considered a social science. The social sciences include, but are not limited to: anthropology, archaeology, economics, history, human geography, jurisprudence, linguistics, political science, psychology, public health, and sociology.
Political science is a social science which deals with systems of governance, and the analysis of political activities, political thoughts and political behavior. It deals extensively with the theory and practice of politics which is commonly thought of as determining of the distribution of power and resources.