Type of Crafting. Woodchopping allows the Player to cut down various types of trees throughout the ingame World. By chopping down a tree, you typically loot Logs and Timber (The Type of the Tree being cut down)
Those are the current types of trees in the game:
There are other kinds of trees in the game such as olive trees and fruit trees but players won't recieve logs or timber from them but rather olives and various other fruits.