appear vs apparition

appear is not a noun while apparition is a noun.

Word	Noun	Adjective	Verb	Adverb
appear	No	No	Yes	No
apparition	Yes	No	No	No

appear (noun)	apparition (noun)
	an act of appearing or becoming visible unexpectedly
	something existing in perception only
	the appearance of a ghostlike figure
	a ghostly appearing figure

appear (verb)	apparition (verb)
come into sight or view
be issued or published
come into being or existence, or appear on the scene
appear as a character on stage or appear in a play, etc.
give a certain impression of being something or having a certain aspect
(of a proposition) seem to be true, probable, or apparent
present oneself formally, as before a (judicial) authority