Geodynamics is the branch of geology that deals with the movement and deformation of the Earth's crust, mantle, and core. Some common synonyms for geodynamic include geophysical, tectonic, seismic, and plate tectonics. Geophysical refers to the study of the physical properties of the Earth, while tectonic is related to the movement and deformation of the Earth's crust. Seismic relates to tremors, earthquakes, and other vibrations of the Earth's surface, and plate tectonics is the study of the movement and interactions of the Earth's lithospheric plates. These synonyms are all related to the geodynamic processes that shape the Earth's surface and interior, and are important for understanding the planet's history and future.