Carpenter

The Carpenter is an NPC located in the Furniture Shop with the Apprentice at that sells various items and has a quest to unlock the  skill. With the skill you are able to gain  XP from crafting.

When you talk to the Carpenter for the first time, you will get a quest to gather 64 of the same color Wool for him. You can buy this wool from the Wool Weaver NPC or the Builder NPC instead of acquiring it manually from Sheep. After that, it will give you the skill as level 1.

skill is used to get XP from crafting, and use the various Furniture of both the Carpenter and the Carpentry Table.