My chemical Romance is a well known band but I haven't heard of Natural Romance.
Reaction was suggested earlier but I haven't heard of them. Brothers was suggested to but I don't know who Natural Brothers are
Maybe , but you find put together any 2 random words and find a Facebook page for one of that name- but there's usually only about 10 people who have ever heard of them. I suppose it depends on how obscure the other answers are- they all seem pretty mainstream. But depends on the setter
All the answers I have seen have been the name of bands/artists so I don't think Romance works as it is not a band name (Yes there is My Chemical Romance and someone has found a facebook site for a band called My Natural Romance, but the answer can't be two band names can it?)
I wondered about The Cure but that's too weak. There are no bands called Elements/Symbols/Fertilizers to my knowledge!
Could it be to do with being opposites? No names spring to mind.
This is an odd one