The Morning Star is a club with one or more spikes. It resembles a mace, when hit with one, they can be very deadly, and if it doesn't kill you, you will wish it had. The length of the spike can vary greatly.
The Morning Star was most often used by, and considered a the Horseman's weapon.
The Mace was considered to be the weapon of knights.
*Disclaimer: I have done extensive research on each of these weapons. I am aware that there are many different versions of each of these weapons. I am not trying to spread false information. If you know and can prove any information wrong, please let me know and I will fix my errors. I have at least three references for all research on the weapons I will discuss through the challenge.