Look further down for what buildings with the * do.
All these are tools.
Hut = Wall + Wall + Lg. Leaves
Granary = Wall + Wall + Lg. Leaves
*Mill = Wall + Wall + Lg. Leaves
*Lumber Mill = Wall + Wall + Wall + Lg. Leaves
Stone Hut = Stone Wall + Stone Wall + Thatching
*Well = Stone Wall + Stone Wall + Thatching
Stone Longhouse = Stone Wall + Stone Wall + Stone Wall + Stone Wall + Thatching + Thatching
Longhouse = Wall + Wall + Wall + Wall + Lg. Leaves + Lg. Leaves
*Medieval House = Stone Wall + Stone Wall + Stone Wall + Plank + Plank + Thatching
*Forge = Stone Wall + Stone Wall + Thatching + Refined Iron + Refined Iron
Medieval Gate = Stone Wall + Stone Wall + Stone Wall + Wall
Medieval Wall = Stone Wall + Stone Wall (Confirming)
*DESCRIPTIONS
Mill = Turns Wheat Bundle into Flour
Lumber Mill = Turns Sm. Tree Stumps into 2 Planks, and Lg. Tree Stumps into 4 Planks
Well = Has clean drinking water, 200 servings if you don't use bucket.
Medieval House = Door will only open for the user, unless you click the button on the inside.
Forge = Has an anvil inside.
Gate = Opens and Closes
VEHICLES
Catapult = Plank + Plank + Plank + Sm. Tree Stump + Seat
Cart = Plank + Plank + Plank + Seat