Which type of 'nothing'?...the one that refers to the total absence of anything whatsoever?...or the one that simply means a vacancy where one expected to see a specific 'something'? "There was a piece of pie on that plate an hour ago...now there's nothing there."
Or perhaps the referential phrase, "I've got nothing to do."

But, no worries... a quick browse thru this little essay will explain it.