Our water comes out of a tap or faucet.
the large thing in the room with all the plumbing fixures?The bathtub? The thing for washing your hands is a sink.
You attach your hose to a fire hydrant (what other words are there, of troy?).

[to Flatlander] I always thought the poles were to keep the snowplows from running over the fire hydrants during the winter. The hydrants would be invisible without them.

Under our house is an "unfinished basement" meaning it has a dirt floor, the door is outside (you can't get to it thorugh the house), but you can store things in it and someone has attempted to make a little workroom there. There's a work bench and some electrical outlets.