Not necessarily. McDonald's isn't made of rubbish, thereby making it NOT rubbish.
Rubbish is rubbish. There's no difference.
Yes but rubbish is made up of items, not rubbish. Rubbish is a plural of anything that is thrown out. So if there was a pile of discarded items. You take out an old shoe.
That makes the shoe classed as an item and not rubbish.
