D&D 5th Edition Weapons Guide
Weapon proficiency
Your race, class, and traits can grant you proficiency with certain weapons or categories of weapons. The two categories are straightforward and martial. Most people are proficient with simple weapons: clubs, maces, and other weapons often found in the hands of commoners. Martial weapons, including swords, axes, and polearms, require more extensive training to use them effectively. Most warriors use martial weapons because they improve their fighting style and training.