Systems science is a multidisciplinary field that studies complex systems in nature, society, and engineering. Synonyms for systems science include complexity science, systems thinking, systems engineering, cybernetics, and network science. Complexity science emphasizes the study of self-organizing systems, emergent properties, and non-linear dynamics. Systems thinking refers to the holistic approach to problem-solving, considering the parts and the whole system. Systems engineering deals with the design, development, and implementation of complex systems. Cybernetics explores the feedback mechanisms that enable the self-regulation of systems. Network science studies the interconnectedness and dynamics of networks. These synonyms highlight the diversity of approaches to studying complex systems and the importance of interdisciplinary perspectives.