Villager trading in Minecraft: professions, workstations, best trades
enchanted iron and diamond swords, diamond axes

The Diamond Axe is an axe: the tool that cuts wood fastest, and a heavy weapon that hits harder than a sword of the same material but swings slower. Made from diamonds, it lasts 1561 uses and hits for 9 damage with a quicker swing, and it can be upgraded to netherite on a smithing table. It works like every other axe; the Iron Axe page explains stripping, scraping and shield breaking.
It is made with the Crafting Table from 2 × Stick and 3 × Diamond.
3 × Diamond + 2 × Stick → Diamond Axe
// Slots with several items cycle through every accepted option.
enchanted iron and diamond swords, diamond axes
At the Crafting Table: 2 × Stick and 3 × Diamond give 1 × Diamond Axe. It can be found as loot in Trial Chambers. Sold by Villager: Toolsmith (Expert), Weaponsmith (Expert).
It chops wood fast, strips logs, scrapes copper and disables shields, and hits hard as a weapon. It is an ingredient in one recipe: Netherite Axe.
1,561 durability points: each use removes one, and it breaks when none are left. Mending and Unbreaking can extend it.
No: only one per inventory slot.
9 enchantments: Efficiency, Fortune, Mending, Silk Touch, Unbreaking, Curse of Vanishing, Bane of Arthropods, Sharpness and 1 more.
Lighten Up (Scrape a Copper Bulb with an Axe to make it brighter); Wax Off (Scrape Wax off of a Copper block!).