Questions for you or anyone, for a sport should Tennis and Table Tennis be allowed as not the same answers if they meant normal tennis and not ping pong? Its a content issue vs key word.
Also, for things in kitchen, would toast and toaster be unique and acceotable words or does the root of each being the same disallow them?
I would say that if Tennis was meant as normal tennis and table tennis as ping pong then yes. And I would accept both answers for things in the kitchen