I've heard people said both terms to mean that when the taxi driver is trying to rip you off by tampering the meter or taking a detour. But which usage is more common or correct in terms of nomenclature? Taxi fraud or taxi scam?
(I found that Google returns "taxi scam" 52,700 results while "taxi fraud" returns only 4,460, but not sure if that just means fraud is more uncommon or is actually incorrect)