appearance vs appear

appearance is a noun but appear is not a noun.

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

appearance (noun)	appear (noun)
the act of appearing in public view
formal attendance (in court or at a hearing) of a party in an action
pretending that something is the case in order to make a good impression
outward or visible aspect of a person or thing
a mental representation
the event of coming into sight

appearance (verb)	appear (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