The word vacuum is so bizarre! Mop, sweep, wash, but vacuum?? Anyways.. to save time vacuuming buy an extension cord at the .99 cent store, and store it with your vacuum. No more plugging, unplugging. Wow, wish I had thought of this one years ago! Just looked up the word vacuum on Wikipedia- Vacuum is space that is empty of matter. The word stems from the Latin adjective vacuus for "empty" or "void".