The word mace has two completely different meanings:

1. A heavy club with a spiked metal head, used as a weapon in medieval times. Knights and soldiers would swing a mace in battle, using its weight to crush armor and shields. Unlike a sword that cuts, a mace delivers a powerful smashing blow. Today you might see ceremonial maces carried in parades or displayed in museums, symbols of authority rather than actual weapons. Some universities and governments still use ornate maces in formal ceremonies, where someone carries the mace at the front of a procession to represent official power.
2. A spice made from the outer covering of nutmeg seeds. When you grind mace, it creates a warm, slightly sweet flavor used in baking and cooking. It tastes similar to nutmeg but milder and more delicate. You might find mace in recipes for cakes, pies, or spice blends. The spice comes from the same tree as nutmeg, but mace is the lacy red coating around the nutmeg seed, dried and ground into powder or sold in pieces called blades.