Wars of Beleriand
Craft represents the ability to process raw materials into things of value. It might be used to create a steel blade out of iron ore, turn a cut of meat and some gathered vegetables into a fine stew, or weave clothing out of natural fibers.
Every time the Craft skill is chosen, it must be in relation to a specific type of crafting. These each count as seperate skills for the skill pyramid. For example, a character might have both the Craft (weaponsmithing) and the Craft (cooking) skills, each at a different level.