It just struck me that polearms occupy both ends of the training spectrum.
More people focus on the sword, but traditionally the spear was the more common weapon throughout the Middle Ages. It can then be claimed that the spear is one of (if not the) simplest weapon to learn.
On the other end we have the pollaxe, which is viewed by myself and many others as being the "acme" weapon - the tip of the pyramid of weapons training. This is because the poleaxe combines so many aspects of the other weapons - the spear, the sword and the dagger.