1. DC motor and stepper motor

2. DC Motor
A DC motor is an electric motor that runs on direct current electricity. Modern DC motors are nearly always operated in conjunction with power electronic devices.

3. Stepper Motor
A brushless DC electric motor that can divide a full rotation into a large number of steps. DC motors rotate continuously when a voltage is applied to the terminals. Stepper motors effectively have multiple "toothed" electromagnets arranged around a central gear-shaped piece of iron.
There are four main types of stepper motors:
Permanent Magnet Stepper
Hybrid Synchronous Stepper
Variable Reluctance Stepper
Lavet type stepping motor

4. Where are stepper motors used?
On a car there are used for:
Cars clock
Window mirrors