Gauge theory can also be referred to as a gauge-invariant theory, a Yang-Mills theory, or a field theory. It is a type of theoretical framework used in particle physics to describe the behavior of subatomic particles and their interactions. Another synonym for gauge theory is a geometric theory, as it describes the geometry of the space-time manifold in which the particles exist. It is often used to explain the strong and weak nuclear forces, as well as the electromagnetic force. Some other related terms include symmetry breaking, quantum chromodynamics, and quantum electrodynamics. While the terminology may differ, these terms all relate to the same fundamental concept of gauge theory and its applications in particle physics.