An event organizer works with the client directly and determines the event's design, needs, and budget. They decide on all elements of the event in the planning phase, from venue, shows, theme, menu and more. They focus on the big-picture to make any event memorable.
On the other hand, an event coordinator does not get involved with the planning of the event itself. Instead, they take charge of managing the individual components to ensure all the different elements of the event are working together smoothly. The event coordinator assists the planner in executing their plan as intended and may look into handling vendors, handling logistical tasks, and organizing delivery dates.