trajectory [trajectories]◼◼◼(path of a body) noun [UK: trə.ˈdʒek.tə.ri] [US: trə.ˈdʒek.tə.ri]
course [courses]◼◼◼(sports: trajectory of a ball etc.) noun [UK: kɔːs] [US: ˈkɔːrs]Our calculations show that the rocket is off its course. = Nos calculs montrent que la fusée a quitté sa trajectoire.