unreal vs realism

unreal is not a noun while realism is a noun.

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

unreal (noun)	realism (noun)
	the attribute of accepting the facts of life and favoring practicality and literal truth
	(philosophy) the philosophical doctrine that physical objects continue to exist when not perceived
	(philosophy) the philosophical doctrine that abstract concepts exist independent of their names
	an artistic movement in 19th century France; artists and writers strove for detailed realistic and factual description
	the state of being actual or real

unreal (adjective)	realism (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