International economics can also be referred to as global economics, worldwide economics, or even transnational economics. Political economy is another term that is used to describe the study of international economic interactions between countries. Globalization studies can also fall under the umbrella term of international economics, as it focuses on the interconnectedness of economies and the impact of global trade on different countries. Other relevant synonyms for international economics include international trade, international finance, and international development. At its core, international economics concerns itself with the analysis and understanding of economic activities that occur beyond national borders, and the impacts they have on the global economy as a whole.