Today the word politics refers to all aspects and types of government.
Political science is a more specific term.
It means the systematic study of government by the best scientific methods available. As such it is one of the social sciences, along with cultural anthropology, economics, geography, and sociology. Political science is also closely related to law because lawmaking is one of the chief functions of government. . The scope of political science is as broad as the nature of government. Organizations such as the Survey Research Center at the University of Michigan gather vast amounts of data on elections and voter behavior.