Therefore-
Maces:
Club or (War Club)
Mace or (Spiked Mace)
Flail or (Bishop's Flail)
A Flail is a mace with the ball connected by a chain so it would therefore be a bit heavier than a normal mace. Especially the Bishops Flail.
http://www.anviltree.com/medievalblades.html
Hammers:
Light Mallet
War Hammer
Maul or (Heavy Maul)