Course
Planned Path: A course is a predetermined path or route that something is intended to follow. It’s often used in contexts where there’s a deliberate plan or direction. Examples:
The pilot plotted a course to avoid the storm. (Predetermined flight path)
I'm taking a cooking course to learn new recipes. (Planned series of lessons)
The river's course winds through the valley. (Established pathway)
Trajectory
Actual Path: A trajectory is the actual path something follows as it moves, regardless of intention. It can be planned or unplanned. Examples:
The rocket's trajectory deviated due to the strong winds. (Actual path, not the intended one)
The career trajectory of the young scientist was impressive. (Actual path of her career)
The trajectory of the bullet was traced by the police. (Actual path of the projectile)
| Feature | Course | Trajectory |
|---|---|---|
| Focus | Planned path | Actual path |
| Deliberation | Often planned | Can be planned or unplanned |
Think of planning a road trip. The course you choose on the map is your planned path. However, due to traffic or detours, your actual trajectory might be different.