And now, because I’m feeling cheery, void.
Void first showed up in the early fourteenth century meaning vacant or to clear something away. It wasn’t until the early seventeenth century that it just meant unoccupied space in general, and the vacuum of space until a century after that. Anyway, void comes from the Anglo French/Old French voide/viude, empty, vast, or uncultivated. It comes from the classical Latin vocivos, empty, and vacuus, emptiness or void. And where vacuum comes from, of course.
Void: vacuum, but shorter and with a different consonant at the end.