unreal vs phantom

unreal is not a noun while phantom is a noun.

Word	Noun	Adjective	Verb	Adverb
unreal	No	Yes	No	No
phantom	Yes	Yes	No	No

unreal (noun)	phantom (noun)
	something existing in perception only
	a ghostly appearing figure

unreal (adjective)	phantom (adjective)
lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria	something apparently sensed but having no physical reality
not actually such; being or seeming fanciful or imaginary
lacking material form or substance; unreal
contrived by art rather than nature