Classify each of these as ground transportation or aviation transportation: airplane, truck, bicycle, unicycle, jet, wagon, helicopter.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Classify each of these as ground transportation or aviation transportation: airplane, truck, bicycle, unicycle, jet, wagon, helicopter.

### Response:

Ground transportation would include all vehicles that travel along the ground. From the list you provided these include: truck, bicycle, unicycle, and wagon.

Aviation transportation includes any vehicle that flies. From the list you provided these include: airplane, jet, and helicopter.