Fixed-wing aircraft
The wings are the most important part because they are what makes the plane fly. The wings create a force called lift that goes against gravity which makes the plane get off the ground. When air flows around the wing (which happens when the plane moves forward) the wing pushes air down, which in turn pushes the plane up. Lift can also be explained using Bernoulli's principle; since wings are designed so that air goes faster on the top of the wing than on the bottom, the higher pressure on the bottom will push the plane up.  Some wings have panels on the back called flaps. Flaps can be extended to make the wing bigger. This makes the wing make more lift, but also more drag. This lets the plane fly slower without stalling, so flaps are often used during takeoff and landing.