It's not a dumb question. I am thinking of that old commercial and the hillbilly at the table asks for 'jelly'. The other people at the table gasp ! It is called 'all fruit', not jelly. My DH and I bought a house on the Illinois River recently and most people call them 'cabins', and I call mine a cottage. It's a house but I prefer cottage. What you name your sewing room is your choice. You can say I am going in to see Ethyl now. You can call it anything you want.