What is the difference between a regular hexagon and a not regular hexagon?

A regular hexagon is a polygon and a unregular is not a polygon

The difference between a regular hexagon and an irregular hexagon is all hexagons have six sides if the six sides are of the same length and the angles formed by the six intersections of these lines are all identical than it is a special hexagon called regular hexagon. If any of the sides is a different length than any of the other sides or if any of the angles are a different size than any of the others the hexagon is called an irregular hexagon.