e/Nightmare (Harvey Comics)

Information
has gloss	eng: In Harvey comics, Nightmare was a beautiful and gentle ghost horse, a good friend of Casper the Friendly Ghost. She did not fit her name in any way, either in looks or in personality. She could fly, and often gave rides to Casper. She could also talk, although in the 90's animated series, she can only whinny.
lexicalization	eng: Nightmare
instance of	c/Fictional ghosts