Sword type weapons can clear patches of difficult wooden terrain with ease.
While using a Glove-type weapon you have advantage on Grapples. Additionally you have advantage on unarmed strikes against an opponent you are grappling.
Bow type weapons do not require ammunition. An Arrow is conjured by all Bows when the string is drawn.
Axe type weapons can clear some stone walls/pillars with ease.
Javelin type weapons will spawn in the users hand after a miss or damage is applied. This lets them be used as an action every turn.
Spear-type weapons have a 2/20 chance to decrease the target's AC by 2 for one round.