Final answer:
The main landing gear is designed to support the weight of the aircraft and absorb landing shocks, usually with multiple wheels, whereas the nose gear supports the front of the airplane and enables steering with typically one or two wheels.
Step-by-step explanation:
The main difference between the main landing gear and the nose gear of an airplane lies in their purpose, position, and structure. The main landing gear is responsible for absorbing the majority of the shock during landing and is sturdy enough to support the weight of the aircraft as it taxis, takes off, and lands. Typically, there are two main gear under the wings or fuselage, and they often have multiple wheels to distribute the load.
On the other hand, the nose gear is located at the front of the aircraft and has a dual function of supporting the aircraft's weight when it's not in flight and enabling steering while taxiing on the ground. The nose gear usually consists of one or two wheels and is comparatively smaller and less robust than the main landing gear.