Minecraft wiki entry for Combat, associated text: Deals extremely high damage, leading to very fast kill.
Infinite uses, no durability.
Large area of effect, depending on terrain.
Slows down the mobs.
Also acts as lighting.
Can be used as a trap.
Can help players keep a distance from hostile mobs.
Doesn't count as player kill, so safe to use against piglins.
Use in accordance with a bow or power bow for a devastating long-range attack.
can be mixed with water for obsidian/cobble depending on how you place it.