Given a list of words, classify and group them into categories.
Car, plane, train, ship
Transportation:
1. Car
2. Plane
3. Train
4. Ship
Complete the following task based on the instruction and optional input provided.### Instruction:
Given a list of words, classify and group them into categories.

### Input:
Car, plane, train, ship

### Output:
Transportation:
1. Car
2. Plane
3. Train
4. Ship