Is Pegasus a unicorn?

Could you elaborate on why you would ask if Pegasus is a unicorn? Pegasus, as a mythological creature from Greek mythology, is commonly depicted as a winged horse, not a unicorn. Unicorns, on the other hand, are usually portrayed as horses with a single horn protruding from their foreheads. So, is there a particular reason you're questioning whether Pegasus is a unicorn, or is it simply a matter of curiosity? It would be helpful to understand your perspective in order to provide a more comprehensive answer.