A hero is a being who, in the opinion of others, has heroic qualities or has performed a heroic act and is regarded as a model or ideal.
A Superhero is a type of heroic character possessing extraordinary talents, supernatural phenomena, or superhuman powers and is dedicated to a moral goal or protecting the public.
A Villain is a being who in the opinion of others, is a cruelly malicious person involved in or devoted to wickedness or crime.
A Supervillain is a villain who displays special powers, skills or equipment powerful enough to be a typically serious challenge to a superhero.