unreal vs realness

unreal is not a noun while realness is a noun.

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

unreal (noun)	realness (noun)
	the state of being actual or real

unreal (adjective)	realness (adjective)
lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria
not actually such; being or seeming fanciful or imaginary
lacking material form or substance; unreal
contrived by art rather than nature