On different sorts of halberds and pollaxes:
Halberds are always spike+axe+pick. Forms differ, but the goal is same. By the way, ANY weapon can be a Flamberg for extra damage.
Pollaxe with beefy hammer and axe.
Pollaxe with 4-point thagomizer and axe.
Pollaxe with gaderffii and axe.
Pollaxe with pick and 4-point thagomizer.
Bec De Corbin with pick and beefy hammer.
Pollaxe with thinner axe and beefy hammer.
Pollaxes with comically short and comically long spikes.
Different sorts of polearms.
War Hammers, Two-Handed War Picks. One of the sides was a hammer (or more rarely, an axe). Other was a pick, more pointy and sharp than on halberd, varying in lenght from "long" to "ludicrous". Some had a forward-facing spike; halberds and pollaxes almost always have a forward-facing spike.