As nouns the difference between unicorns and pegasi
is that unicorns
is while pegasi
As nouns the difference between pegasi and pegasid
is that pegasi
is while pegasid
is (zoology) any member of the family pegasidae or pegasid
can be (planetology) an exosolar planet whose characteristics are similar to jupiter, but which orbits its parent star much more closely and thus has higher temperatures.